diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-12 22:24:03 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-12 22:24:03 +0300 |
| commit | f632a8170a6b667ee4e3f552087588f0fe13c4bb (patch) | |
| tree | 9fbdd3505f1471364265727dea1bc9d034cbed8f /drivers | |
| parent | ef8f3d48afd6a17a0dae8c277c2f539c2f19fd16 (diff) | |
| parent | c33d442328f556460b79aba6058adb37bb555389 (diff) | |
| download | linux-f632a8170a6b667ee4e3f552087588f0fe13c4bb.tar.xz | |
Merge tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core and debugfs updates from Greg KH:
"Here is the "big" driver core and debugfs changes for 5.3-rc1
It's a lot of different patches, all across the tree due to some api
changes and lots of debugfs cleanups.
Other than the debugfs cleanups, in this set of changes we have:
- bus iteration function cleanups
- scripts/get_abi.pl tool to display and parse Documentation/ABI
entries in a simple way
- cleanups to Documenatation/ABI/ entries to make them parse easier
due to typos and other minor things
- default_attrs use for some ktype users
- driver model documentation file conversions to .rst
- compressed firmware file loading
- deferred probe fixes
All of these have been in linux-next for a while, with a bunch of
merge issues that Stephen has been patient with me for"
* tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits)
debugfs: make error message a bit more verbose
orangefs: fix build warning from debugfs cleanup patch
ubifs: fix build warning after debugfs cleanup patch
driver: core: Allow subsystems to continue deferring probe
drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT
arch_topology: Remove error messages on out-of-memory conditions
lib: notifier-error-inject: no need to check return value of debugfs_create functions
swiotlb: no need to check return value of debugfs_create functions
ceph: no need to check return value of debugfs_create functions
sunrpc: no need to check return value of debugfs_create functions
ubifs: no need to check return value of debugfs_create functions
orangefs: no need to check return value of debugfs_create functions
nfsd: no need to check return value of debugfs_create functions
lib: 842: no need to check return value of debugfs_create functions
debugfs: provide pr_fmt() macro
debugfs: log errors when something goes wrong
drivers: s390/cio: Fix compilation warning about const qualifiers
drivers: Add generic helper to match by of_node
driver_find_device: Unify the match function with class_find_device()
bus_find_device: Unify the match callback with class_find_device
...
Diffstat (limited to 'drivers')
90 files changed, 502 insertions, 638 deletions
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index 398451839178..d696f165a50e 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -508,10 +508,10 @@ struct hid_uid { const char *uid; }; -static int match_hid_uid(struct device *dev, void *data) +static int match_hid_uid(struct device *dev, const void *data) { struct acpi_device *adev = ACPI_COMPANION(dev); - struct hid_uid *id = data; + const struct hid_uid *id = data; if (!adev) return 0; diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 7def63ab00c0..e3974a8f8fd4 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -725,17 +725,15 @@ bool acpi_dev_found(const char *hid) EXPORT_SYMBOL(acpi_dev_found); struct acpi_dev_match_info { - const char *dev_name; - struct acpi_device *adev; struct acpi_device_id hid[2]; const char *uid; s64 hrv; }; -static int acpi_dev_match_cb(struct device *dev, void *data) +static int acpi_dev_match_cb(struct device *dev, const void *data) { struct acpi_device *adev = to_acpi_device(dev); - struct acpi_dev_match_info *match = data; + const struct acpi_dev_match_info *match = data; unsigned long long hrv; acpi_status status; @@ -746,9 +744,6 @@ static int acpi_dev_match_cb(struct device *dev, void *data) strcmp(adev->pnp.unique_id, match->uid))) return 0; - match->dev_name = acpi_dev_name(adev); - match->adev = adev; - if (match->hrv == -1) return 1; @@ -818,7 +813,7 @@ acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv) match.hrv = hrv; dev = bus_find_device(&acpi_bus_type, NULL, &match, acpi_dev_match_cb); - return dev ? match.adev : NULL; + return dev ? to_acpi_device(dev) : NULL; } EXPORT_SYMBOL(acpi_dev_get_first_match_dev); diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c index 3eaa459ae057..aa64eece77a6 100644 --- a/drivers/amba/tegra-ahb.c +++ b/drivers/amba/tegra-ahb.c @@ -134,10 +134,10 @@ static inline void gizmo_writel(struct tegra_ahb *ahb, u32 value, u32 offset) } #ifdef CONFIG_TEGRA_IOMMU_SMMU -static int tegra_ahb_match_by_smmu(struct device *dev, void *data) +static int tegra_ahb_match_by_smmu(struct device *dev, const void *data) { struct tegra_ahb *ahb = dev_get_drvdata(dev); - struct device_node *dn = data; + const struct device_node *dn = data; return (ahb->dev->of_node == dn) ? 1 : 0; } diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index 9b09e31ae82f..63c1e76739f1 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -137,7 +137,6 @@ bool __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu) sizeof(*raw_capacity), GFP_KERNEL); if (!raw_capacity) { - pr_err("cpu_capacity: failed to allocate memory for raw capacities\n"); cap_parsing_failed = true; return false; } @@ -217,10 +216,8 @@ static int __init register_cpufreq_notifier(void) if (!acpi_disabled || !raw_capacity) return -EINVAL; - if (!alloc_cpumask_var(&cpus_to_visit, GFP_KERNEL)) { - pr_err("cpu_capacity: failed to allocate memory for cpus_to_visit\n"); + if (!alloc_cpumask_var(&cpus_to_visit, GFP_KERNEL)) return -ENOMEM; - } cpumask_copy(cpus_to_visit, cpu_possible_mask); diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 0a58e969f8b7..df3cac739813 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -323,8 +323,8 @@ EXPORT_SYMBOL_GPL(bus_for_each_dev); * return to the caller and not iterate over any more devices. */ struct device *bus_find_device(struct bus_type *bus, - struct device *start, void *data, - int (*match)(struct device *dev, void *data)) + struct device *start, const void *data, + int (*match)(struct device *dev, const void *data)) { struct klist_iter i; struct device *dev; @@ -342,7 +342,7 @@ struct device *bus_find_device(struct bus_type *bus, } EXPORT_SYMBOL_GPL(bus_find_device); -static int match_name(struct device *dev, void *data) +static int match_name(struct device *dev, const void *data) { const char *name = data; diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c index 8827c60f51e2..8d553c92cd32 100644 --- a/drivers/base/cacheinfo.c +++ b/drivers/base/cacheinfo.c @@ -660,7 +660,8 @@ static int cacheinfo_cpu_pre_down(unsigned int cpu) static int __init cacheinfo_sysfs_init(void) { - return cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "base/cacheinfo:online", + return cpuhp_setup_state(CPUHP_AP_BASE_CACHEINFO_ONLINE, + "base/cacheinfo:online", cacheinfo_cpu_online, cacheinfo_cpu_pre_down); } device_initcall(cacheinfo_sysfs_init); diff --git a/drivers/base/core.c b/drivers/base/core.c index b4c64528f13c..da84a73f2ba6 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -3356,3 +3356,9 @@ void device_set_of_node_from_dev(struct device *dev, const struct device *dev2) dev->of_node_reused = true; } EXPORT_SYMBOL_GPL(device_set_of_node_from_dev); + +int device_match_of_node(struct device *dev, const void *np) +{ + return dev->of_node == np; +} +EXPORT_SYMBOL_GPL(device_match_of_node); diff --git a/drivers/base/dd.c b/drivers/base/dd.c index 0df9b4461766..994a90747420 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -235,6 +235,19 @@ static int __init deferred_probe_timeout_setup(char *str) } __setup("deferred_probe_timeout=", deferred_probe_timeout_setup); +static int __driver_deferred_probe_check_state(struct device *dev) +{ + if (!initcalls_done) + return -EPROBE_DEFER; + + if (!deferred_probe_timeout) { + dev_WARN(dev, "deferred probe timeout, ignoring dependency"); + return -ETIMEDOUT; + } + + return 0; +} + /** * driver_deferred_probe_check_state() - Check deferred probe state * @dev: device to check @@ -248,14 +261,40 @@ __setup("deferred_probe_timeout=", deferred_probe_timeout_setup); */ int driver_deferred_probe_check_state(struct device *dev) { - if (initcalls_done) { - if (!deferred_probe_timeout) { - dev_WARN(dev, "deferred probe timeout, ignoring dependency"); - return -ETIMEDOUT; - } - dev_warn(dev, "ignoring dependency for device, assuming no driver"); - return -ENODEV; - } + int ret; + + ret = __driver_deferred_probe_check_state(dev); + if (ret < 0) + return ret; + + dev_warn(dev, "ignoring dependency for device, assuming no driver"); + + return -ENODEV; +} + +/** + * driver_deferred_probe_check_state_continue() - check deferred probe state + * @dev: device to check + * + * Returns -ETIMEDOUT if deferred probe debug timeout has expired, or + * -EPROBE_DEFER otherwise. + * + * Drivers or subsystems can opt-in to calling this function instead of + * directly returning -EPROBE_DEFER. + * + * This is similar to driver_deferred_probe_check_state(), but it allows the + * subsystem to keep deferring probe after built-in drivers have had a chance + * to probe. One scenario where that is useful is if built-in drivers rely on + * resources that are provided by modular drivers. + */ +int driver_deferred_probe_check_state_continue(struct device *dev) +{ + int ret; + + ret = __driver_deferred_probe_check_state(dev); + if (ret < 0) + return ret; + return -EPROBE_DEFER; } diff --git a/drivers/base/devcon.c b/drivers/base/devcon.c index f7035fc12b92..09f28479b243 100644 --- a/drivers/base/devcon.c +++ b/drivers/base/devcon.c @@ -133,7 +133,7 @@ static struct bus_type *generic_match_buses[] = { NULL, }; -static int device_fwnode_match(struct device *dev, void *fwnode) +static int device_fwnode_match(struct device *dev, const void *fwnode) { return dev_fwnode(dev) == fwnode; } diff --git a/drivers/base/driver.c b/drivers/base/driver.c index 857c8f1b876e..4e5ca632f35e 100644 --- a/drivers/base/driver.c +++ b/drivers/base/driver.c @@ -73,8 +73,8 @@ EXPORT_SYMBOL_GPL(driver_for_each_device); * return to the caller and not iterate over any more devices. */ struct device *driver_find_device(struct device_driver *drv, - struct device *start, void *data, - int (*match)(struct device *dev, void *data)) + struct device *start, const void *data, + int (*match)(struct device *dev, const void *data)) { struct klist_iter i; struct device *dev; diff --git a/drivers/base/firmware_loader/Kconfig b/drivers/base/firmware_loader/Kconfig index 38f2da6f5c2b..3f9e274e2ed3 100644 --- a/drivers/base/firmware_loader/Kconfig +++ b/drivers/base/firmware_loader/Kconfig @@ -26,6 +26,9 @@ config FW_LOADER if FW_LOADER +config FW_LOADER_PAGED_BUF + bool + config EXTRA_FIRMWARE string "Build named firmware blobs into the kernel binary" help @@ -67,6 +70,7 @@ config EXTRA_FIRMWARE_DIR config FW_LOADER_USER_HELPER bool "Enable the firmware sysfs fallback mechanism" + select FW_LOADER_PAGED_BUF help This option enables a sysfs loading facility to enable firmware loading to the kernel through userspace as a fallback mechanism @@ -151,5 +155,19 @@ config FW_LOADER_USER_HELPER_FALLBACK If you are unsure about this, say N here. +config FW_LOADER_COMPRESS + bool "Enable compressed firmware support" + select FW_LOADER_PAGED_BUF + select XZ_DEC + help + This option enables the support for loading compressed firmware + files. The caller of firmware API receives the decompressed file + content. The compressed file is loaded as a fallback, only after + loading the raw file failed at first. + + Currently only XZ-compressed files are supported, and they have to + be compressed with either none or crc32 integrity check type (pass + "-C crc32" option to xz command). + endif # FW_LOADER endmenu diff --git a/drivers/base/firmware_loader/fallback.c b/drivers/base/firmware_loader/fallback.c index f962488546b6..62ee90b4db56 100644 --- a/drivers/base/firmware_loader/fallback.c +++ b/drivers/base/firmware_loader/fallback.c @@ -219,20 +219,6 @@ static ssize_t firmware_loading_show(struct device *dev, return sprintf(buf, "%d\n", loading); } -/* one pages buffer should be mapped/unmapped only once */ -static int map_fw_priv_pages(struct fw_priv *fw_priv) -{ - if (!fw_priv->is_paged_buf) - return 0; - - vunmap(fw_priv->data); - fw_priv->data = vmap(fw_priv->pages, fw_priv->nr_pages, 0, - PAGE_KERNEL_RO); - if (!fw_priv->data) - return -ENOMEM; - return 0; -} - /** * firmware_loading_store() - set value in the 'loading' control file * @dev: device pointer @@ -254,7 +240,6 @@ static ssize_t firmware_loading_store(struct device *dev, struct fw_priv *fw_priv; ssize_t written = count; int loading = simple_strtol(buf, NULL, 10); - int i; mutex_lock(&fw_lock); fw_priv = fw_sysfs->fw_priv; @@ -265,12 +250,7 @@ static ssize_t firmware_loading_store(struct device *dev, case 1: /* discarding any previous partial load */ if (!fw_sysfs_done(fw_priv)) { - for (i = 0; i < fw_priv->nr_pages; i++) - __free_page(fw_priv->pages[i]); - vfree(fw_priv->pages); - fw_priv->pages = NULL; - fw_priv->page_array_size = 0; - fw_priv->nr_pages = 0; + fw_free_paged_buf(fw_priv); fw_state_start(fw_priv); } break; @@ -284,7 +264,7 @@ static ssize_t firmware_loading_store(struct device *dev, * see the mapped 'buf->data' once the loading * is completed. * */ - rc = map_fw_priv_pages(fw_priv); + rc = fw_map_paged_buf(fw_priv); if (rc) dev_err(dev, "%s: map pages failed\n", __func__); @@ -389,40 +369,13 @@ out: static int fw_realloc_pages(struct fw_sysfs *fw_sysfs, int min_size) { - struct fw_priv *fw_priv= fw_sysfs->fw_priv; - int pages_needed = PAGE_ALIGN(min_size) >> PAGE_SHIFT; - - /* If the array of pages is too small, grow it... */ - if (fw_priv->page_array_size < pages_needed) { - int new_array_size = max(pages_needed, - fw_priv->page_array_size * 2); - struct page **new_pages; + int err; - new_pages = vmalloc(array_size(new_array_size, sizeof(void *))); - if (!new_pages) { - fw_load_abort(fw_sysfs); - return -ENOMEM; - } - memcpy(new_pages, fw_priv->pages, - fw_priv->page_array_size * sizeof(void *)); - memset(&new_pages[fw_priv->page_array_size], 0, sizeof(void *) * - (new_array_size - fw_priv->page_array_size)); - vfree(fw_priv->pages); - fw_priv->pages = new_pages; - fw_priv->page_array_size = new_array_size; - } - - while (fw_priv->nr_pages < pages_needed) { - fw_priv->pages[fw_priv->nr_pages] = - alloc_page(GFP_KERNEL | __GFP_HIGHMEM); - - if (!fw_priv->pages[fw_priv->nr_pages]) { - fw_load_abort(fw_sysfs); - return -ENOMEM; - } - fw_priv->nr_pages++; - } - return 0; + err = fw_grow_paged_buf(fw_sysfs->fw_priv, + PAGE_ALIGN(min_size) >> PAGE_SHIFT); + if (err) + fw_load_abort(fw_sysfs); + return err; } /** @@ -659,7 +612,7 @@ static bool fw_run_sysfs_fallback(enum fw_opt opt_flags) /* Also permit LSMs and IMA to fail firmware sysfs fallback */ ret = security_kernel_load_data(LOADING_FIRMWARE); if (ret < 0) - return ret; + return false; return fw_force_sysfs_fallback(opt_flags); } diff --git a/drivers/base/firmware_loader/firmware.h b/drivers/base/firmware_loader/firmware.h index 4c1395f8e7ed..7048a41973ed 100644 --- a/drivers/base/firmware_loader/firmware.h +++ b/drivers/base/firmware_loader/firmware.h @@ -64,12 +64,14 @@ struct fw_priv { void *data; size_t size; size_t allocated_size; -#ifdef CONFIG_FW_LOADER_USER_HELPER +#ifdef CONFIG_FW_LOADER_PAGED_BUF bool is_paged_buf; - bool need_uevent; struct page **pages; int nr_pages; int page_array_size; +#endif +#ifdef CONFIG_FW_LOADER_USER_HELPER + bool need_uevent; struct list_head pending_list; #endif const char *fw_name; @@ -133,4 +135,14 @@ static inline void fw_state_done(struct fw_priv *fw_priv) int assign_fw(struct firmware *fw, struct device *device, enum fw_opt opt_flags); +#ifdef CONFIG_FW_LOADER_PAGED_BUF +void fw_free_paged_buf(struct fw_priv *fw_priv); +int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed); +int fw_map_paged_buf(struct fw_priv *fw_priv); +#else +static inline void fw_free_paged_buf(struct fw_priv *fw_priv) {} +int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed) { return -ENXIO; } +int fw_map_paged_buf(struct fw_priv *fw_priv) { return -ENXIO; } +#endif + #endif /* __FIRMWARE_LOADER_H */ diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c index 7eaaf5ee5ba6..bf44c79beae9 100644 --- a/drivers/base/firmware_loader/main.c +++ b/drivers/base/firmware_loader/main.c @@ -33,6 +33,7 @@ #include <linux/syscore_ops.h> #include <linux/reboot.h> #include <linux/security.h> +#include <linux/xz.h> #include <generated/utsrelease.h> @@ -251,15 +252,7 @@ static void __free_fw_priv(struct kref *ref) list_del(&fw_priv->list); spin_unlock(&fwc->lock); -#ifdef CONFIG_FW_LOADER_USER_HELPER - if (fw_priv->is_paged_buf) { - int i; - vunmap(fw_priv->data); - for (i = 0; i < fw_priv->nr_pages; i++) - __free_page(fw_priv->pages[i]); - vfree(fw_priv->pages); - } else -#endif + fw_free_paged_buf(fw_priv); /* free leftover pages */ if (!fw_priv->allocated_size) vfree(fw_priv->data); kfree_const(fw_priv->fw_name); @@ -274,6 +267,174 @@ static void free_fw_priv(struct fw_priv *fw_priv) spin_unlock(&fwc->lock); } +#ifdef CONFIG_FW_LOADER_PAGED_BUF +void fw_free_paged_buf(struct fw_priv *fw_priv) +{ + int i; + + if (!fw_priv->pages) + return; + + for (i = 0; i < fw_priv->nr_pages; i++) + __free_page(fw_priv->pages[i]); + kvfree(fw_priv->pages); + fw_priv->pages = NULL; + fw_priv->page_array_size = 0; + fw_priv->nr_pages = 0; +} + +int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed) +{ + /* If the array of pages is too small, grow it */ + if (fw_priv->page_array_size < pages_needed) { + int new_array_size = max(pages_needed, + fw_priv->page_array_size * 2); + struct page **new_pages; + + new_pages = kvmalloc_array(new_array_size, sizeof(void *), + GFP_KERNEL); + if (!new_pages) + return -ENOMEM; + memcpy(new_pages, fw_priv->pages, + fw_priv->page_array_size * sizeof(void *)); + memset(&new_pages[fw_priv->page_array_size], 0, sizeof(void *) * + (new_array_size - fw_priv->page_array_size)); + kvfree(fw_priv->pages); + fw_priv->pages = new_pages; + fw_priv->page_array_size = new_array_size; + } + + while (fw_priv->nr_pages < pages_needed) { + fw_priv->pages[fw_priv->nr_pages] = + alloc_page(GFP_KERNEL | __GFP_HIGHMEM); + + if (!fw_priv->pages[fw_priv->nr_pages]) + return -ENOMEM; + fw_priv->nr_pages++; + } + + return 0; +} + +int fw_map_paged_buf(struct fw_priv *fw_priv) +{ + /* one pages buffer should be mapped/unmapped only once */ + if (!fw_priv->pages) + return 0; + + vunmap(fw_priv->data); + fw_priv->data = vmap(fw_priv->pages, fw_priv->nr_pages, 0, + PAGE_KERNEL_RO); + if (!fw_priv->data) + return -ENOMEM; + + /* page table is no longer needed after mapping, let's free */ + kvfree(fw_priv->pages); + fw_priv->pages = NULL; + + return 0; +} +#endif + +/* + * XZ-compressed firmware support + */ +#ifdef CONFIG_FW_LOADER_COMPRESS +/* show an error and return the standard error code */ +static int fw_decompress_xz_error(struct device *dev, enum xz_ret xz_ret) +{ + if (xz_ret != XZ_STREAM_END) { + dev_warn(dev, "xz decompression failed (xz_ret=%d)\n", xz_ret); + return xz_ret == XZ_MEM_ERROR ? -ENOMEM : -EINVAL; + } + return 0; +} + +/* single-shot decompression onto the pre-allocated buffer */ +static int fw_decompress_xz_single(struct device *dev, struct fw_priv *fw_priv, + size_t in_size, const void *in_buffer) +{ + struct xz_dec *xz_dec; + struct xz_buf xz_buf; + enum xz_ret xz_ret; + + xz_dec = xz_dec_init(XZ_SINGLE, (u32)-1); + if (!xz_dec) + return -ENOMEM; + + xz_buf.in_size = in_size; + xz_buf.in = in_buffer; + xz_buf.in_pos = 0; + xz_buf.out_size = fw_priv->allocated_size; + xz_buf.out = fw_priv->data; + xz_buf.out_pos = 0; + + xz_ret = xz_dec_run(xz_dec, &xz_buf); + xz_dec_end(xz_dec); + + fw_priv->size = xz_buf.out_pos; + return fw_decompress_xz_error(dev, xz_ret); +} + +/* decompression on paged buffer and map it */ +static int fw_decompress_xz_pages(struct device *dev, struct fw_priv *fw_priv, + size_t in_size, const void *in_buffer) +{ + struct xz_dec *xz_dec; + struct xz_buf xz_buf; + enum xz_ret xz_ret; + struct page *page; + int err = 0; + + xz_dec = xz_dec_init(XZ_DYNALLOC, (u32)-1); + if (!xz_dec) + return -ENOMEM; + + xz_buf.in_size = in_size; + xz_buf.in = in_buffer; + xz_buf.in_pos = 0; + + fw_priv->is_paged_buf = true; + fw_priv->size = 0; + do { + if (fw_grow_paged_buf(fw_priv, fw_priv->nr_pages + 1)) { + err = -ENOMEM; + goto out; + } + + /* decompress onto the new allocated page */ + page = fw_priv->pages[fw_priv->nr_pages - 1]; + xz_buf.out = kmap(page); + xz_buf.out_pos = 0; + xz_buf.out_size = PAGE_SIZE; + xz_ret = xz_dec_run(xz_dec, &xz_buf); + kunmap(page); + fw_priv->size += xz_buf.out_pos; + /* partial decompression means either end or error */ + if (xz_buf.out_pos != PAGE_SIZE) + break; + } while (xz_ret == XZ_OK); + + err = fw_decompress_xz_error(dev, xz_ret); + if (!err) + err = fw_map_paged_buf(fw_priv); + + out: + xz_dec_end(xz_dec); + return err; +} + +static int fw_decompress_xz(struct device *dev, struct fw_priv *fw_priv, + size_t in_size, const void *in_buffer) +{ + /* if the buffer is pre-allocated, we can perform in single-shot mode */ + if (fw_priv->data) + return fw_decompress_xz_single(dev, fw_priv, in_size, in_buffer); + else + return fw_decompress_xz_pages(dev, fw_priv, in_size, in_buffer); +} +#endif /* CONFIG_FW_LOADER_COMPRESS */ + /* direct firmware loading support */ static char fw_path_para[256]; static const char * const fw_path[] = { @@ -293,7 +454,12 @@ module_param_string(path, fw_path_para, sizeof(fw_path_para), 0644); MODULE_PARM_DESC(path, "customized firmware image search path with a higher priority than default path"); static int -fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv) +fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv, + const char *suffix, + int (*decompress)(struct device *dev, + struct fw_priv *fw_priv, + size_t in_size, + const void *in_buffer)) { loff_t size; int i, len; @@ -301,9 +467,11 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv) char *path; enum kernel_read_file_id id = READING_FIRMWARE; size_t msize = INT_MAX; + void *buffer = NULL; /* Already populated data member means we're loading into a buffer */ - if (fw_priv->data) { + if (!decompress && fw_priv->data) { + buffer = fw_priv->data; id = READING_FIRMWARE_PREALLOC_BUFFER; msize = fw_priv->allocated_size; } @@ -317,15 +485,15 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv) if (!fw_path[i][0]) continue; - len = snprintf(path, PATH_MAX, "%s/%s", - fw_path[i], fw_priv->fw_name); + len = snprintf(path, PATH_MAX, "%s/%s%s", + fw_path[i], fw_priv->fw_name, suffix); if (len >= PATH_MAX) { rc = -ENAMETOOLONG; break; } fw_priv->size = 0; - rc = kernel_read_file_from_path(path, &fw_priv->data, &size, + rc = kernel_read_file_from_path(path, &buffer, &size, msize, id); if (rc) { if (rc != -ENOENT) @@ -336,8 +504,24 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv) path); continue; } - dev_dbg(device, "direct-loading %s\n", fw_priv->fw_name); - fw_priv->size = size; + if (decompress) { + dev_dbg(device, "f/w decompressing %s\n", + fw_priv->fw_name); + rc = decompress(device, fw_priv, size, buffer); + /* discard the superfluous original content */ + vfree(buffer); + buffer = NULL; + if (rc) { + fw_free_paged_buf(fw_priv); + continue; + } + } else { + dev_dbg(device, "direct-loading %s\n", + fw_priv->fw_name); + if (!fw_priv->data) + fw_priv->data = buffer; + fw_priv->size = size; + } fw_state_done(fw_priv); break; } @@ -584,7 +768,13 @@ _request_firmware(const struct firmware **firmware_p, const char *name, if (ret <= 0) /* error or already assigned */ goto out; - ret = fw_get_filesystem_firmware(device, fw->priv); + ret = fw_get_filesystem_firmware(device, fw->priv, "", NULL); +#ifdef CONFIG_FW_LOADER_COMPRESS + if (ret == -ENOENT) + ret = fw_get_filesystem_firmware(device, fw->priv, ".xz", + fw_decompress_xz); +#endif + if (ret) { if (!(opt_flags & FW_OPT_NO_WARN)) dev_warn(device, diff --git a/drivers/base/node.c b/drivers/base/node.c index 8598fcbd2a17..aa878fbcf705 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -66,6 +66,7 @@ static DEVICE_ATTR(cpulist, S_IRUGO, node_read_cpulist, NULL); * @dev: Device for this memory access class * @list_node: List element in the node's access list * @access: The access class rank + * @hmem_attrs: Heterogeneous memory performance attributes */ struct node_access_nodes { struct device dev; @@ -673,8 +674,8 @@ int register_cpu_under_node(unsigned int cpu, unsigned int nid) /** * register_memory_node_under_compute_node - link memory node to its compute * node for a given access class. - * @mem_node: Memory node number - * @cpu_node: Cpu node number + * @mem_nid: Memory node number + * @cpu_nid: Cpu node number * @access: Access class to register * * Description: diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 4d1729853d1a..713903290385 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -5,7 +5,7 @@ * Copyright (c) 2002-3 Patrick Mochel * Copyright (c) 2002-3 Open Source Development Labs * - * Please see Documentation/driver-model/platform.txt for more + * Please see Documentation/driver-model/platform.rst for more * information. */ diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index 1dc10740fc0f..6707659cffd6 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -2819,9 +2819,9 @@ static const struct device_type bmc_device_type = { .groups = bmc_dev_attr_groups, }; -static int __find_bmc_guid(struct device *dev, void *data) +static int __find_bmc_guid(struct device *dev, const void *data) { - guid_t *guid = data; + const guid_t *guid = data; struct bmc_device *bmc; int rv; @@ -2857,9 +2857,9 @@ struct prod_dev_id { unsigned char device_id; }; -static int __find_bmc_prod_dev_id(struct device *dev, void *data) +static int __find_bmc_prod_dev_id(struct device *dev, const void *data) { - struct prod_dev_id *cid = data; + const struct prod_dev_id *cid = data; struct bmc_device *bmc; int rv; diff --git a/drivers/char/ipmi/ipmi_si_platform.c b/drivers/char/ipmi/ipmi_si_platform.c index f2a91c4d8cab..fd94c4238449 100644 --- a/drivers/char/ipmi/ipmi_si_platform.c +++ b/drivers/char/ipmi/ipmi_si_platform.c @@ -426,7 +426,7 @@ static int ipmi_remove(struct platform_device *pdev) return ipmi_si_remove_by_dev(&pdev->dev); } -static int pdev_match_name(struct device *dev, void *data) +static int pdev_match_name(struct device *dev, const void *data) { struct platform_device *pdev = to_platform_device(dev); const char *name = data; diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h index 937a930ce87d..44fd4f9404a9 100644 --- a/drivers/firmware/arm_scmi/common.h +++ b/drivers/firmware/arm_scmi/common.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0 +/* SPDX-License-Identifier: GPL-2.0 */ /* * System Control and Management Interface (SCMI) Message Protocol * driver common header file containing some definitions, structures diff --git a/drivers/firmware/efi/dev-path-parser.c b/drivers/firmware/efi/dev-path-parser.c index 85ec99f97841..20123384271c 100644 --- a/drivers/firmware/efi/dev-path-parser.c +++ b/drivers/firmware/efi/dev-path-parser.c @@ -17,9 +17,9 @@ struct acpi_hid_uid { char uid[11]; /* UINT_MAX + null byte */ }; -static int __init match_acpi_dev(struct device *dev, void *data) +static int __init match_acpi_dev(struct device *dev, const void *data) { - struct acpi_hid_uid hid_uid = *(struct acpi_hid_uid *)data; + struct acpi_hid_uid hid_uid = *(const struct acpi_hid_uid *)data; struct acpi_device *adev = to_acpi_device(dev); if (acpi_match_device_ids(adev, hid_uid.hid)) diff --git a/drivers/firmware/ti_sci.h b/drivers/firmware/ti_sci.h index 4983827151bf..adbeeefaca92 100644 --- a/drivers/firmware/ti_sci.h +++ b/drivers/firmware/ti_sci.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: BSD-3-Clause +/* SPDX-License-Identifier: BSD-3-Clause */ /* * Texas Instruments System Control Interface (TISCI) Protocol * diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c index 75f64abf9c81..e405309baadc 100644 --- a/drivers/fpga/of-fpga-region.c +++ b/drivers/fpga/of-fpga-region.c @@ -22,11 +22,6 @@ static const struct of_device_id fpga_region_of_match[] = { }; MODULE_DEVICE_TABLE(of, fpga_region_of_match); -static int fpga_region_of_node_match(struct device *dev, const void *data) -{ - return dev->of_node == data; -} - /** * of_fpga_region_find - find FPGA region * @np: device node of FPGA Region @@ -37,7 +32,7 @@ static int fpga_region_of_node_match(struct device *dev, const void *data) */ static struct fpga_region *of_fpga_region_find(struct device_node *np) { - return fpga_region_class_find(NULL, np, fpga_region_of_node_match); + return fpga_region_class_find(NULL, np, device_match_of_node); } /** diff --git a/drivers/gpio/gpio-cs5535.c b/drivers/gpio/gpio-cs5535.c index 6314225dbed0..3611a0571667 100644 --- a/drivers/gpio/gpio-cs5535.c +++ b/drivers/gpio/gpio-cs5535.c @@ -41,7 +41,7 @@ MODULE_PARM_DESC(mask, "GPIO channel mask."); /* * FIXME: convert this singleton driver to use the state container - * design pattern, see Documentation/driver-model/design-patterns.txt + * design pattern, see Documentation/driver-model/design-patterns.rst */ static struct cs5535_gpio_chip { struct gpio_chip chip; diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index 80b75501f5c6..ad19df0686c9 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -93,7 +93,7 @@ static struct bus_type mipi_dsi_bus_type = { .pm = &mipi_dsi_device_pm_ops, }; -static int of_device_match(struct device *dev, void *data) +static int of_device_match(struct device *dev, const void *data) { return dev->of_node == data; } diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 826b3f047c0c..cf25f183c4a7 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -2372,10 +2372,10 @@ static int tegra_dc_parse_dt(struct tegra_dc *dc) return 0; } -static int tegra_dc_match_by_pipe(struct device *dev, void *data) +static int tegra_dc_match_by_pipe(struct device *dev, const void *data) { struct tegra_dc *dc = dev_get_drvdata(dev); - unsigned int pipe = (unsigned long)data; + unsigned int pipe = (unsigned long)(void *)data; return dc->pipe == pipe; } diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c index 58bfd6319f65..2463aa7ab4f6 100644 --- a/drivers/hwtracing/coresight/coresight-cpu-debug.c +++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c @@ -525,23 +525,12 @@ static const struct file_operations debug_func_knob_fops = { static int debug_func_init(void) { - struct dentry *file; int ret; /* Create debugfs node */ debug_debugfs_dir = debugfs_create_dir("coresight_cpu_debug", NULL); - if (!debug_debugfs_dir) { - pr_err("%s: unable to create debugfs directory\n", __func__); - return -ENOMEM; - } - - file = debugfs_create_file("enable", 0644, debug_debugfs_dir, NULL, - &debug_func_knob_fops); - if (!file) { - pr_err("%s: unable to create enable knob file\n", __func__); - ret = -ENOMEM; - goto err; - } + debugfs_create_file("enable", 0644, debug_debugfs_dir, NULL, + &debug_func_knob_fops); /* Register function to be called for panic */ ret = atomic_notifier_chain_register(&panic_notifier_list, diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c index cf580ffbc27c..dad7d96c5943 100644 --- a/drivers/hwtracing/coresight/coresight-platform.c +++ b/drivers/hwtracing/coresight/coresight-platform.c @@ -37,7 +37,7 @@ static int coresight_alloc_conns(struct device *dev, return 0; } -int coresight_device_fwnode_match(struct device *dev, void *fwnode) +int coresight_device_fwnode_match(struct device *dev, const void *fwnode) { return dev_fwnode(dev) == fwnode; } diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index 86d1fc2c1bd4..55db77f6410b 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -498,9 +498,9 @@ struct coresight_device *coresight_get_sink(struct list_head *path) return csdev; } -static int coresight_enabled_sink(struct device *dev, void *data) +static int coresight_enabled_sink(struct device *dev, const void *data) { - bool *reset = data; + const bool *reset = data; struct coresight_device *csdev = to_coresight_device(dev); if ((csdev->type == CORESIGHT_DEV_TYPE_SINK || @@ -544,7 +544,7 @@ struct coresight_device *coresight_get_enabled_sink(bool deactivate) return dev ? to_coresight_device(dev) : NULL; } -static int coresight_sink_by_id(struct device *dev, void *data) +static int coresight_sink_by_id(struct device *dev, const void *data) { struct coresight_device *csdev = to_coresight_device(dev); unsigned long hash; diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c index 033dce563c99..55922896d862 100644 --- a/drivers/hwtracing/intel_th/core.c +++ b/drivers/hwtracing/intel_th/core.c @@ -789,10 +789,9 @@ static int intel_th_populate(struct intel_th *th) return 0; } -static int match_devt(struct device *dev, void *data) +static int match_devt(struct device *dev, const void *data) { - dev_t devt = (dev_t)(unsigned long)data; - + dev_t devt = (dev_t)(unsigned long)(void *)data; return dev->devt == devt; } diff --git a/drivers/i2c/busses/i2c-amd-mp2-pci.c b/drivers/i2c/busses/i2c-amd-mp2-pci.c index 455e1f36a2a3..c7fe3b44a860 100644 --- a/drivers/i2c/busses/i2c-amd-mp2-pci.c +++ b/drivers/i2c/busses/i2c-amd-mp2-pci.c @@ -457,7 +457,7 @@ static struct pci_driver amd_mp2_pci_driver = { }; module_pci_driver(amd_mp2_pci_driver); -static int amd_mp2_device_match(struct device *dev, void *data) +static int amd_mp2_device_match(struct device *dev, const void *data) { return 1; } diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c index 1969bfdfe6a4..428a82c3a35f 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -320,7 +320,7 @@ u32 i2c_acpi_find_bus_speed(struct device *dev) } EXPORT_SYMBOL_GPL(i2c_acpi_find_bus_speed); -static int i2c_acpi_find_match_adapter(struct device *dev, void *data) +static int i2c_acpi_find_match_adapter(struct device *dev, const void *data) { struct i2c_adapter *adapter = i2c_verify_adapter(dev); @@ -330,7 +330,7 @@ static int i2c_acpi_find_match_adapter(struct device *dev, void *data) return ACPI_HANDLE(dev) == (acpi_handle)data; } -static int i2c_acpi_find_match_device(struct device *dev, void *data) +static int i2c_acpi_find_match_device(struct device *dev, const void *data) { return ACPI_COMPANION(dev) == data; } diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c index 406e5f695a7e..2eb59a260ad4 100644 --- a/drivers/i2c/i2c-core-of.c +++ b/drivers/i2c/i2c-core-of.c @@ -112,12 +112,12 @@ void of_i2c_register_devices(struct i2c_adapter *adap) of_node_put(bus); } -static int of_dev_node_match(struct device *dev, void *data) +static int of_dev_node_match(struct device *dev, const void *data) { return dev->of_node == data; } -static int of_dev_or_parent_node_match(struct device *dev, void *data) +static int of_dev_or_parent_node_match(struct device *dev, const void *data) { if (dev->of_node == data) return 1; diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index 2fb2314548e9..5a8351c9a426 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -90,7 +90,7 @@ static const struct iio_chan_spec #ifdef CONFIG_OF -static int iio_dev_node_match(struct device *dev, void *data) +static int iio_dev_node_match(struct device *dev, const void *data) { return dev->of_node == data && dev->type == &iio_device_type; } diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c index e068a02122f5..3afd3e9330e7 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c @@ -4498,7 +4498,7 @@ static const struct acpi_device_id hns_roce_acpi_match[] = { }; MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match); -static int hns_roce_node_match(struct device *dev, void *fwnode) +static int hns_roce_node_match(struct device *dev, const void *fwnode) { return dev->fwnode == fwnode; } diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 2d96cf0023dd..a9a9fabd3968 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -2034,7 +2034,7 @@ arm_smmu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova) static struct platform_driver arm_smmu_driver; -static int arm_smmu_match_node(struct device *dev, void *data) +static int arm_smmu_match_node(struct device *dev, const void *data) { return dev->fwnode == data; } diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 653b6b3dcafb..64977c131ee6 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1426,7 +1426,7 @@ static bool arm_smmu_capable(enum iommu_cap cap) } } -static int arm_smmu_match_node(struct device *dev, void *data) +static int arm_smmu_match_node(struct device *dev, const void *data) { return dev->fwnode == data; } diff --git a/drivers/mailbox/bcm-flexrm-mailbox.c b/drivers/mailbox/bcm-flexrm-mailbox.c index a64116586b4c..43b336316fde 100644 --- a/drivers/mailbox/bcm-flexrm-mailbox.c +++ b/drivers/mailbox/bcm-flexrm-mailbox.c @@ -296,8 +296,6 @@ struct flexrm_mbox { struct dma_pool *bd_pool; struct dma_pool *cmpl_pool; struct dentry *root; - struct dentry *config; - struct dentry *stats; struct mbox_controller controller; }; @@ -1603,7 +1601,6 @@ static int flexrm_mbox_probe(struct platform_device *pdev) 1 << RING_CMPL_ALIGN_ORDER, 0); if (!mbox->cmpl_pool) { ret = -ENOMEM; - goto fail_destroy_bd_pool; } /* Allocate platform MSIs for each ring */ @@ -1624,28 +1621,15 @@ static int flexrm_mbox_probe(struct platform_device *pdev) /* Create debugfs root entry */ mbox->root = debugfs_create_dir(dev_name(mbox->dev), NULL); - if (IS_ERR_OR_NULL(mbox->root)) { - ret = PTR_ERR_OR_ZERO(mbox->root); - goto fail_free_msis; - } /* Create debugfs config entry */ - mbox->config = debugfs_create_devm_seqfile(mbox->dev, - "config", mbox->root, - flexrm_debugfs_conf_show); - if (IS_ERR_OR_NULL(mbox->config)) { - ret = PTR_ERR_OR_ZERO(mbox->config); - goto fail_free_debugfs_root; - } + debugfs_create_devm_seqfile(mbox->dev, "config", mbox->root, + flexrm_debugfs_conf_show); /* Create debugfs stats entry */ - mbox->stats = debugfs_create_devm_seqfile(mbox->dev, - "stats", mbox->root, - flexrm_debugfs_stats_show); - if (IS_ERR_OR_NULL(mbox->stats)) { - ret = PTR_ERR_OR_ZERO(mbox->stats); - goto fail_free_debugfs_root; - } + debugfs_create_devm_seqfile(mbox->dev, "stats", mbox->root, + flexrm_debugfs_stats_show); + skip_debugfs: /* Initialize mailbox controller */ @@ -1676,11 +1660,9 @@ skip_debugfs: fail_free_debugfs_root: debugfs_remove_recursive(mbox->root); -fail_free_msis: platform_msi_domain_free_irqs(dev); fail_destroy_cmpl_pool: dma_pool_destroy(mbox->cmpl_pool); -fail_destroy_bd_pool: dma_pool_destroy(mbox->bd_pool); fail: return ret; diff --git a/drivers/mailbox/bcm-pdc-mailbox.c b/drivers/mailbox/bcm-pdc-mailbox.c index 8513c42f7091..fcb3b18a0678 100644 --- a/drivers/mailbox/bcm-pdc-mailbox.c +++ b/drivers/mailbox/bcm-pdc-mailbox.c @@ -395,8 +395,6 @@ struct pdc_state { */ struct scatterlist *src_sg[PDC_RING_ENTRIES]; - struct dentry *debugfs_stats; /* debug FS stats file for this PDC */ - /* counters */ u32 pdc_requests; /* number of request messages submitted */ u32 pdc_replies; /* number of reply messages received */ @@ -501,9 +499,8 @@ static void pdc_setup_debugfs(struct pdc_state *pdcs) debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL); /* S_IRUSR == 0400 */ - pdcs->debugfs_stats = debugfs_create_file(spu_stats_name, 0400, - debugfs_dir, pdcs, - &pdc_debugfs_stats); + debugfs_create_file(spu_stats_name, 0400, debugfs_dir, pdcs, + &pdc_debugfs_stats); } static void pdc_free_debugfs(void) @@ -1603,7 +1600,6 @@ static int pdc_probe(struct platform_device *pdev) if (err) goto cleanup_buf_pool; - pdcs->debugfs_stats = NULL; pdc_setup_debugfs(pdcs); dev_dbg(dev, "pdc_probe() successful"); diff --git a/drivers/mfd/altera-sysmgr.c b/drivers/mfd/altera-sysmgr.c index 8976f82785bb..2ee14d8a6d31 100644 --- a/drivers/mfd/altera-sysmgr.c +++ b/drivers/mfd/altera-sysmgr.c @@ -92,9 +92,9 @@ static struct regmap_config altr_sysmgr_regmap_cfg = { * Matching function used by driver_find_device(). * Return: True if match is found, otherwise false. */ -static int sysmgr_match_phandle(struct device *dev, void *data) +static int sysmgr_match_phandle(struct device *dev, const void *data) { - return dev->of_node == (struct device_node *)data; + return dev->of_node == (const struct device_node *)data; } /** diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c index 8ce1e41d632c..b65e585fc8c6 100644 --- a/drivers/mfd/syscon.c +++ b/drivers/mfd/syscon.c @@ -190,27 +190,6 @@ struct regmap *syscon_regmap_lookup_by_compatible(const char *s) } EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_compatible); -static int syscon_match_pdevname(struct device *dev, void *data) -{ - return !strcmp(dev_name(dev), (const char *)data); -} - -struct regmap *syscon_regmap_lookup_by_pdevname(const char *s) -{ - struct device *dev; - struct syscon *syscon; - - dev = driver_find_device(&syscon_driver.driver, NULL, (void *)s, - syscon_match_pdevname); - if (!dev) - return ERR_PTR(-EPROBE_DEFER); - - syscon = dev_get_drvdata(dev); - - return syscon->regmap; -} -EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_pdevname); - struct regmap *syscon_regmap_lookup_by_phandle(struct device_node *np, const char *property) { diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h index a73c9e669d78..5dc0f6093f9d 100644 --- a/drivers/misc/cxl/cxl.h +++ b/drivers/misc/cxl/cxl.h @@ -908,11 +908,11 @@ void cxl_update_dedicated_ivtes_psl8(struct cxl_context *ctx); #ifdef CONFIG_DEBUG_FS -int cxl_debugfs_init(void); +void cxl_debugfs_init(void); void cxl_debugfs_exit(void); -int cxl_debugfs_adapter_add(struct cxl *adapter); +void cxl_debugfs_adapter_add(struct cxl *adapter); void cxl_debugfs_adapter_remove(struct cxl *adapter); -int cxl_debugfs_afu_add(struct cxl_afu *afu); +void cxl_debugfs_afu_add(struct cxl_afu *afu); void cxl_debugfs_afu_remove(struct cxl_afu *afu); void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir); void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir); @@ -921,27 +921,24 @@ void cxl_debugfs_add_afu_regs_psl8(struct cxl_afu *afu, struct dentry *dir); #else /* CONFIG_DEBUG_FS */ -static inline int __init cxl_debugfs_init(void) +static inline void __init cxl_debugfs_init(void) { - return 0; } static inline void cxl_debugfs_exit(void) { } -static inline int cxl_debugfs_adapter_add(struct cxl *adapter) +static inline void cxl_debugfs_adapter_add(struct cxl *adapter) { - return 0; } static inline void cxl_debugfs_adapter_remove(struct cxl *adapter) { } -static inline int cxl_debugfs_afu_add(struct cxl_afu *afu) +static inline void cxl_debugfs_afu_add(struct cxl_afu *afu) { - return 0; } static inline void cxl_debugfs_afu_remove(struct cxl_afu *afu) diff --git a/drivers/misc/cxl/debugfs.c b/drivers/misc/cxl/debugfs.c index 1fda22c24c93..7b987bf498b5 100644 --- a/drivers/misc/cxl/debugfs.c +++ b/drivers/misc/cxl/debugfs.c @@ -26,11 +26,11 @@ static int debugfs_io_u64_set(void *data, u64 val) DEFINE_DEBUGFS_ATTRIBUTE(fops_io_x64, debugfs_io_u64_get, debugfs_io_u64_set, "0x%016llx\n"); -static struct dentry *debugfs_create_io_x64(const char *name, umode_t mode, - struct dentry *parent, u64 __iomem *value) +static void debugfs_create_io_x64(const char *name, umode_t mode, + struct dentry *parent, u64 __iomem *value) { - return debugfs_create_file_unsafe(name, mode, parent, - (void __force *)value, &fops_io_x64); + debugfs_create_file_unsafe(name, mode, parent, (void __force *)value, + &fops_io_x64); } void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir) @@ -54,25 +54,22 @@ void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir) debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_TRACE)); } -int cxl_debugfs_adapter_add(struct cxl *adapter) +void cxl_debugfs_adapter_add(struct cxl *adapter) { struct dentry *dir; char buf[32]; if (!cxl_debugfs) - return -ENODEV; + return; snprintf(buf, 32, "card%i", adapter->adapter_num); dir = debugfs_create_dir(buf, cxl_debugfs); - if (IS_ERR(dir)) - return PTR_ERR(dir); adapter->debugfs = dir; debugfs_create_io_x64("err_ivte", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_ErrIVTE)); if (adapter->native->sl_ops->debugfs_add_adapter_regs) adapter->native->sl_ops->debugfs_add_adapter_regs(adapter, dir); - return 0; } void cxl_debugfs_adapter_remove(struct cxl *adapter) @@ -96,18 +93,16 @@ void cxl_debugfs_add_afu_regs_psl8(struct cxl_afu *afu, struct dentry *dir) debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SLICE_TRACE)); } -int cxl_debugfs_afu_add(struct cxl_afu *afu) +void cxl_debugfs_afu_add(struct cxl_afu *afu) { struct dentry *dir; char buf[32]; if (!afu->adapter->debugfs) - return -ENODEV; + return; snprintf(buf, 32, "psl%i.%i", afu->adapter->adapter_num, afu->slice); dir = debugfs_create_dir(buf, afu->adapter->debugfs); - if (IS_ERR(dir)) - return PTR_ERR(dir); afu->debugfs = dir; debugfs_create_io_x64("sr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SR_An)); @@ -118,8 +113,6 @@ int cxl_debugfs_afu_add(struct cxl_afu *afu) if (afu->adapter->native->sl_ops->debugfs_add_afu_regs) afu->adapter->native->sl_ops->debugfs_add_afu_regs(afu, dir); - - return 0; } void cxl_debugfs_afu_remove(struct cxl_afu *afu) @@ -127,19 +120,12 @@ void cxl_debugfs_afu_remove(struct cxl_afu *afu) debugfs_remove_recursive(afu->debugfs); } -int __init cxl_debugfs_init(void) +void __init cxl_debugfs_init(void) { - struct dentry *ent; - if (!cpu_has_feature(CPU_FTR_HVMODE)) - return 0; - - ent = debugfs_create_dir("cxl", NULL); - if (IS_ERR(ent)) - return PTR_ERR(ent); - cxl_debugfs = ent; + return; - return 0; + cxl_debugfs = debugfs_create_dir("cxl", NULL); } void cxl_debugfs_exit(void) diff --git a/drivers/misc/genwqe/card_base.c b/drivers/misc/genwqe/card_base.c index ab7f2cd21c93..1dc6c7c5cbce 100644 --- a/drivers/misc/genwqe/card_base.c +++ b/drivers/misc/genwqe/card_base.c @@ -1369,10 +1369,6 @@ static int __init genwqe_init_module(void) class_genwqe->devnode = genwqe_devnode; debugfs_genwqe = debugfs_create_dir(GENWQE_DEVNAME, NULL); - if (!debugfs_genwqe) { - rc = -ENOMEM; - goto err_out; - } rc = pci_register_driver(&genwqe_driver); if (rc != 0) { @@ -1384,7 +1380,6 @@ static int __init genwqe_init_module(void) err_out0: debugfs_remove(debugfs_genwqe); - err_out: class_destroy(class_genwqe); return rc; } diff --git a/drivers/misc/genwqe/card_base.h b/drivers/misc/genwqe/card_base.h index 2f6dd2f37942..0e902977d35f 100644 --- a/drivers/misc/genwqe/card_base.h +++ b/drivers/misc/genwqe/card_base.h @@ -437,7 +437,7 @@ int genwqe_device_create(struct genwqe_dev *cd); int genwqe_device_remove(struct genwqe_dev *cd); /* debugfs */ -int genwqe_init_debugfs(struct genwqe_dev *cd); +void genwqe_init_debugfs(struct genwqe_dev *cd); void genqwe_exit_debugfs(struct genwqe_dev *cd); int genwqe_read_softreset(struct genwqe_dev *cd); diff --git a/drivers/misc/genwqe/card_debugfs.c b/drivers/misc/genwqe/card_debugfs.c index 49c945d0c488..1b5b82e65268 100644 --- a/drivers/misc/genwqe/card_debugfs.c +++ b/drivers/misc/genwqe/card_debugfs.c @@ -316,11 +316,9 @@ static int info_show(struct seq_file *s, void *unused) DEFINE_SHOW_ATTRIBUTE(info); -int genwqe_init_debugfs(struct genwqe_dev *cd) +void genwqe_init_debugfs(struct genwqe_dev *cd) { struct dentry *root; - struct dentry *file; - int ret; char card_name[64]; char name[64]; unsigned int i; @@ -328,153 +326,50 @@ int genwqe_init_debugfs(struct genwqe_dev *cd) sprintf(card_name, "%s%d_card", GENWQE_DEVNAME, cd->card_idx); root = debugfs_create_dir(card_name, cd->debugfs_genwqe); - if (!root) { - ret = -ENOMEM; - goto err0; - } /* non privileged interfaces are done here */ - file = debugfs_create_file("ddcb_info", S_IRUGO, root, cd, - &ddcb_info_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("info", S_IRUGO, root, cd, - &info_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_x64("err_inject", 0666, root, &cd->err_inject); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_u32("ddcb_software_timeout", 0666, root, - &cd->ddcb_software_timeout); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_u32("kill_timeout", 0666, root, - &cd->kill_timeout); - if (!file) { - ret = -ENOMEM; - goto err1; - } + debugfs_create_file("ddcb_info", S_IRUGO, root, cd, &ddcb_info_fops); + debugfs_create_file("info", S_IRUGO, root, cd, &info_fops); + debugfs_create_x64("err_inject", 0666, root, &cd->err_inject); + debugfs_create_u32("ddcb_software_timeout", 0666, root, + &cd->ddcb_software_timeout); + debugfs_create_u32("kill_timeout", 0666, root, &cd->kill_timeout); /* privileged interfaces follow here */ if (!genwqe_is_privileged(cd)) { cd->debugfs_root = root; - return 0; + return; } - file = debugfs_create_file("curr_regs", S_IRUGO, root, cd, - &curr_regs_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd, - &curr_dbg_uid0_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd, - &curr_dbg_uid1_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd, - &curr_dbg_uid2_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("prev_regs", S_IRUGO, root, cd, - &prev_regs_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd, - &prev_dbg_uid0_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd, - &prev_dbg_uid1_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd, - &prev_dbg_uid2_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } + debugfs_create_file("curr_regs", S_IRUGO, root, cd, &curr_regs_fops); + debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd, + &curr_dbg_uid0_fops); + debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd, + &curr_dbg_uid1_fops); + debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd, + &curr_dbg_uid2_fops); + debugfs_create_file("prev_regs", S_IRUGO, root, cd, &prev_regs_fops); + debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd, + &prev_dbg_uid0_fops); + debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd, + &prev_dbg_uid1_fops); + debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd, + &prev_dbg_uid2_fops); for (i = 0; i < GENWQE_MAX_VFS; i++) { sprintf(name, "vf%u_jobtimeout_msec", i); - - file = debugfs_create_u32(name, 0666, root, - &cd->vf_jobtimeout_msec[i]); - if (!file) { - ret = -ENOMEM; - goto err1; - } + debugfs_create_u32(name, 0666, root, + &cd->vf_jobtimeout_msec[i]); } - file = debugfs_create_file("jobtimer", S_IRUGO, root, cd, - &jtimer_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("queue_working_time", S_IRUGO, root, cd, - &queue_working_time_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_u32("skip_recovery", 0666, root, - &cd->skip_recovery); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_u32("use_platform_recovery", 0666, root, - &cd->use_platform_recovery); - if (!file) { - ret = -ENOMEM; - goto err1; - } + debugfs_create_file("jobtimer", S_IRUGO, root, cd, &jtimer_fops); + debugfs_create_file("queue_working_time", S_IRUGO, root, cd, + &queue_working_time_fops); + debugfs_create_u32("skip_recovery", 0666, root, &cd->skip_recovery); + debugfs_create_u32("use_platform_recovery", 0666, root, + &cd->use_platform_recovery); cd->debugfs_root = root; - return 0; -err1: - debugfs_remove_recursive(root); -err0: - return ret; } void genqwe_exit_debugfs(struct genwqe_dev *cd) diff --git a/drivers/misc/genwqe/card_dev.c b/drivers/misc/genwqe/card_dev.c index 3bc51f19c734..0e34c0568fed 100644 --- a/drivers/misc/genwqe/card_dev.c +++ b/drivers/misc/genwqe/card_dev.c @@ -1301,14 +1301,10 @@ int genwqe_device_create(struct genwqe_dev *cd) goto err_cdev; } - rc = genwqe_init_debugfs(cd); - if (rc != 0) - goto err_debugfs; + genwqe_init_debugfs(cd); return 0; - err_debugfs: - device_destroy(cd->class_genwqe, cd->devnum_genwqe); err_cdev: cdev_del(&cd->cdev_genwqe); err_add: diff --git a/drivers/misc/lkdtm/core.c b/drivers/misc/lkdtm/core.c index e9767bdcdb44..66ae6b2a6950 100644 --- a/drivers/misc/lkdtm/core.c +++ b/drivers/misc/lkdtm/core.c @@ -391,7 +391,7 @@ static int __init lkdtm_module_init(void) { struct crashpoint *crashpoint = NULL; const struct crashtype *crashtype = NULL; - int ret = -EINVAL; + int ret; int i; /* Neither or both of these need to be set */ @@ -434,22 +434,13 @@ static int __init lkdtm_module_init(void) /* Register debugfs interface */ lkdtm_debugfs_root = debugfs_create_dir("provoke-crash", NULL); - if (!lkdtm_debugfs_root) { - pr_err("creating root dir failed\n"); - return -ENODEV; - } /* Install debugfs trigger files. */ for (i = 0; i < ARRAY_SIZE(crashpoints); i++) { struct crashpoint *cur = &crashpoints[i]; - struct dentry *de; - de = debugfs_create_file(cur->name, 0644, lkdtm_debugfs_root, - cur, &cur->fops); - if (de == NULL) { - pr_err("could not create crashpoint %s\n", cur->name); - goto out_err; - } + debugfs_create_file(cur->name, 0644, lkdtm_debugfs_root, cur, + &cur->fops); } /* Install crashpoint if one was selected. */ diff --git a/drivers/misc/mei/debugfs.c b/drivers/misc/mei/debugfs.c index 47cfd5005e1b..a26c716c61a1 100644 --- a/drivers/misc/mei/debugfs.c +++ b/drivers/misc/mei/debugfs.c @@ -154,46 +154,21 @@ void mei_dbgfs_deregister(struct mei_device *dev) * * @dev: the mei device structure * @name: the mei device name - * - * Return: 0 on success, <0 on failure. */ -int mei_dbgfs_register(struct mei_device *dev, const char *name) +void mei_dbgfs_register(struct mei_device *dev, const char *name) { - struct dentry *dir, *f; + struct dentry *dir; dir = debugfs_create_dir(name, NULL); - if (!dir) - return -ENOMEM; - dev->dbgfs_dir = dir; - f = debugfs_create_file("meclients", S_IRUSR, dir, - dev, &mei_dbgfs_meclients_fops); - if (!f) { - dev_err(dev->dev, "meclients: registration failed\n"); - goto err; - } - f = debugfs_create_file("active", S_IRUSR, dir, - dev, &mei_dbgfs_active_fops); - if (!f) { - dev_err(dev->dev, "active: registration failed\n"); - goto err; - } - f = debugfs_create_file("devstate", S_IRUSR, dir, - dev, &mei_dbgfs_devstate_fops); - if (!f) { - dev_err(dev->dev, "devstate: registration failed\n"); - goto err; - } - f = debugfs_create_file("allow_fixed_address", S_IRUSR | S_IWUSR, dir, - &dev->allow_fixed_address, - &mei_dbgfs_allow_fa_fops); - if (!f) { - dev_err(dev->dev, "allow_fixed_address: registration failed\n"); - goto err; - } - return 0; -err: - mei_dbgfs_deregister(dev); - return -ENODEV; + debugfs_create_file("meclients", S_IRUSR, dir, dev, + &mei_dbgfs_meclients_fops); + debugfs_create_file("active", S_IRUSR, dir, dev, + &mei_dbgfs_active_fops); + debugfs_create_file("devstate", S_IRUSR, dir, dev, + &mei_dbgfs_devstate_fops); + debugfs_create_file("allow_fixed_address", S_IRUSR | S_IWUSR, dir, + &dev->allow_fixed_address, + &mei_dbgfs_allow_fa_fops); } diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index ad02097d7fee..f894d1f8a53e 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -984,16 +984,10 @@ int mei_register(struct mei_device *dev, struct device *parent) goto err_dev_create; } - ret = mei_dbgfs_register(dev, dev_name(clsdev)); - if (ret) { - dev_err(clsdev, "cannot register debugfs ret = %d\n", ret); - goto err_dev_dbgfs; - } + mei_dbgfs_register(dev, dev_name(clsdev)); return 0; -err_dev_dbgfs: - device_destroy(mei_class, devno); err_dev_create: cdev_del(&dev->cdev); err_dev_add: diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index fca832fcac57..f71a023aed3c 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -718,13 +718,10 @@ bool mei_hbuf_acquire(struct mei_device *dev); bool mei_write_is_idle(struct mei_device *dev); #if IS_ENABLED(CONFIG_DEBUG_FS) -int mei_dbgfs_register(struct mei_device *dev, const char *name); +void mei_dbgfs_register(struct mei_device *dev, const char *name); void mei_dbgfs_deregister(struct mei_device *dev); #else -static inline int mei_dbgfs_register(struct mei_device *dev, const char *name) -{ - return 0; -} +static inline void mei_dbgfs_register(struct mei_device *dev, const char *name) {} static inline void mei_dbgfs_deregister(struct mei_device *dev) {} #endif /* CONFIG_DEBUG_FS */ diff --git a/drivers/misc/mic/card/mic_debugfs.c b/drivers/misc/mic/card/mic_debugfs.c index bf7a60ccc66c..3ee3d2402634 100644 --- a/drivers/misc/mic/card/mic_debugfs.c +++ b/drivers/misc/mic/card/mic_debugfs.c @@ -51,25 +51,13 @@ DEFINE_SHOW_ATTRIBUTE(mic_intr); */ void __init mic_create_card_debug_dir(struct mic_driver *mdrv) { - struct dentry *d; - if (!mic_dbg) return; mdrv->dbg_dir = debugfs_create_dir(mdrv->name, mic_dbg); - if (!mdrv->dbg_dir) { - dev_err(mdrv->dev, "Cant create dbg_dir %s\n", mdrv->name); - return; - } - - d = debugfs_create_file("intr_test", 0444, mdrv->dbg_dir, - mdrv, &mic_intr_fops); - if (!d) { - dev_err(mdrv->dev, - "Cant create dbg intr_test %s\n", mdrv->name); - return; - } + debugfs_create_file("intr_test", 0444, mdrv->dbg_dir, mdrv, + &mic_intr_fops); } /** @@ -89,8 +77,6 @@ void mic_delete_card_debug_dir(struct mic_driver *mdrv) void __init mic_init_card_debugfs(void) { mic_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL); - if (!mic_dbg) - pr_err("can't create debugfs dir\n"); } /** diff --git a/drivers/misc/mic/cosm/cosm_debugfs.c b/drivers/misc/mic/cosm/cosm_debugfs.c index 8e3f4589f16d..2fc9f4bf7001 100644 --- a/drivers/misc/mic/cosm/cosm_debugfs.c +++ b/drivers/misc/mic/cosm/cosm_debugfs.c @@ -93,8 +93,6 @@ void cosm_create_debug_dir(struct cosm_device *cdev) scnprintf(name, sizeof(name), "mic%d", cdev->index); cdev->dbg_dir = debugfs_create_dir(name, cosm_dbg); - if (!cdev->dbg_dir) - return; debugfs_create_file("log_buf", 0444, cdev->dbg_dir, cdev, &log_buf_fops); @@ -113,8 +111,6 @@ void cosm_delete_debug_dir(struct cosm_device *cdev) void cosm_init_debugfs(void) { cosm_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL); - if (!cosm_dbg) - pr_err("can't create debugfs dir\n"); } void cosm_exit_debugfs(void) diff --git a/drivers/misc/mic/host/mic_debugfs.c b/drivers/misc/mic/host/mic_debugfs.c index 7ef8efe9552f..8a8e41677501 100644 --- a/drivers/misc/mic/host/mic_debugfs.c +++ b/drivers/misc/mic/host/mic_debugfs.c @@ -113,8 +113,6 @@ void mic_create_debug_dir(struct mic_device *mdev) scnprintf(name, sizeof(name), "mic%d", mdev->id); mdev->dbg_dir = debugfs_create_dir(name, mic_dbg); - if (!mdev->dbg_dir) - return; debugfs_create_file("smpt", 0444, mdev->dbg_dir, mdev, &mic_smpt_fops); @@ -143,8 +141,6 @@ void mic_delete_debug_dir(struct mic_device *mdev) void __init mic_init_debugfs(void) { mic_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL); - if (!mic_dbg) - pr_err("can't create debugfs dir\n"); } /** diff --git a/drivers/misc/mic/scif/scif_debugfs.c b/drivers/misc/mic/scif/scif_debugfs.c index a6820480105a..8fe38e7ca6e6 100644 --- a/drivers/misc/mic/scif/scif_debugfs.c +++ b/drivers/misc/mic/scif/scif_debugfs.c @@ -103,11 +103,6 @@ DEFINE_SHOW_ATTRIBUTE(scif_rma); void __init scif_init_debugfs(void) { scif_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL); - if (!scif_dbg) { - dev_err(scif_info.mdev.this_device, - "can't create debugfs dir scif\n"); - return; - } debugfs_create_file("scif_dev", 0444, scif_dbg, NULL, &scif_dev_fops); debugfs_create_file("scif_rma", 0444, scif_dbg, NULL, &scif_rma_fops); diff --git a/drivers/misc/mic/vop/vop_debugfs.c b/drivers/misc/mic/vop/vop_debugfs.c index ed59cd75e182..9d4f175f4dd1 100644 --- a/drivers/misc/mic/vop/vop_debugfs.c +++ b/drivers/misc/mic/vop/vop_debugfs.c @@ -174,10 +174,6 @@ void vop_init_debugfs(struct vop_info *vi) snprintf(name, sizeof(name), "%s%d", KBUILD_MODNAME, vi->vpdev->dnode); vi->dbg = debugfs_create_dir(name, NULL); - if (!vi->dbg) { - pr_err("can't create debugfs dir vop\n"); - return; - } debugfs_create_file("dp", 0444, vi->dbg, vi, &vop_dp_fops); debugfs_create_file("vdev_info", 0444, vi->dbg, vi, &vop_vdev_info_fops); } diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c index 18ca938b86e6..a36ed1ff5967 100644 --- a/drivers/misc/ti-st/st_kim.c +++ b/drivers/misc/ti-st/st_kim.c @@ -748,10 +748,6 @@ static int kim_probe(struct platform_device *pdev) pr_info("sysfs entries created\n"); kim_debugfs_dir = debugfs_create_dir("ti-st", NULL); - if (!kim_debugfs_dir) { - pr_err(" debugfs entries creation failed "); - return 0; - } debugfs_create_file("version", S_IRUGO, kim_debugfs_dir, kim_gdata, &version_fops); diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c index 043eed845246..97b58e7ad901 100644 --- a/drivers/misc/vmw_balloon.c +++ b/drivers/misc/vmw_balloon.c @@ -1699,19 +1699,10 @@ static int vmballoon_debug_show(struct seq_file *f, void *offset) DEFINE_SHOW_ATTRIBUTE(vmballoon_debug); -static int __init vmballoon_debugfs_init(struct vmballoon *b) +static void __init vmballoon_debugfs_init(struct vmballoon *b) { - int error; - b->dbg_entry = debugfs_create_file("vmmemctl", S_IRUGO, NULL, b, &vmballoon_debug_fops); - if (IS_ERR(b->dbg_entry)) { - error = PTR_ERR(b->dbg_entry); - pr_err("failed to create debugfs entry, error: %d\n", error); - return error; - } - - return 0; } static void __exit vmballoon_debugfs_exit(struct vmballoon *b) @@ -1724,9 +1715,8 @@ static void __exit vmballoon_debugfs_exit(struct vmballoon *b) #else -static inline int vmballoon_debugfs_init(struct vmballoon *b) +static inline void vmballoon_debugfs_init(struct vmballoon *b) { - return 0; } static inline void vmballoon_debugfs_exit(struct vmballoon *b) @@ -1948,10 +1938,6 @@ static int __init vmballoon_init(void) if (error) goto fail; - error = vmballoon_debugfs_init(&balloon); - if (error) - goto fail; - /* * Initialization of compaction must be done after the call to * balloon_devinfo_init() . @@ -1971,6 +1957,8 @@ static int __init vmballoon_init(void) queue_delayed_work(system_freezable_wq, &balloon.dwork, 0); + vmballoon_debugfs_init(&balloon); + return 0; fail: vmballoon_unregister_shrinker(&balloon); diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c index 09c16d88172e..bb6586d0e5af 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c @@ -754,7 +754,7 @@ struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev) return (void *)misc_op; } -static int hns_dsaf_dev_match(struct device *dev, void *fwnode) +static int hns_dsaf_dev_match(struct device *dev, const void *fwnode) { return dev->fwnode == fwnode; } diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c index 28ec0d57941d..41c90f2ddb31 100644 --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -2286,7 +2286,7 @@ ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent) struct ice_hw *hw; int err; - /* this driver uses devres, see Documentation/driver-model/devres.txt */ + /* this driver uses devres, see Documentation/driver-model/devres.rst */ err = pcim_enable_device(pdev); if (err) return err; diff --git a/drivers/net/ethernet/ti/cpsw-phy-sel.c b/drivers/net/ethernet/ti/cpsw-phy-sel.c index 48e0924259f5..4e184eecc8e1 100644 --- a/drivers/net/ethernet/ti/cpsw-phy-sel.c +++ b/drivers/net/ethernet/ti/cpsw-phy-sel.c @@ -151,9 +151,9 @@ static void cpsw_gmii_sel_dra7xx(struct cpsw_phy_sel_priv *priv, } static struct platform_driver cpsw_phy_sel_driver; -static int match(struct device *dev, void *data) +static int match(struct device *dev, const void *data) { - struct device_node *node = (struct device_node *)data; + const struct device_node *node = (const struct device_node *)data; return dev->of_node == node && dev->driver == &cpsw_phy_sel_driver.driver; } diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c index 5f4ece0d5a73..ae27be85e363 100644 --- a/drivers/net/ethernet/ti/davinci_emac.c +++ b/drivers/net/ethernet/ti/davinci_emac.c @@ -1371,7 +1371,7 @@ static int emac_devioctl(struct net_device *ndev, struct ifreq *ifrq, int cmd) return -EOPNOTSUPP; } -static int match_first_device(struct device *dev, void *data) +static int match_first_device(struct device *dev, const void *data) { if (dev->parent && dev->parent->of_node) return of_device_is_compatible(dev->parent->of_node, diff --git a/drivers/net/ethernet/toshiba/tc35815.c b/drivers/net/ethernet/toshiba/tc35815.c index c50a9772f4af..8479a440527b 100644 --- a/drivers/net/ethernet/toshiba/tc35815.c +++ b/drivers/net/ethernet/toshiba/tc35815.c @@ -694,10 +694,10 @@ err_out: * should provide a "tc35815-mac" device with a MAC address in its * platform_data. */ -static int tc35815_mac_match(struct device *dev, void *data) +static int tc35815_mac_match(struct device *dev, const void *data) { struct platform_device *plat_dev = to_platform_device(dev); - struct pci_dev *pci_dev = data; + const struct pci_dev *pci_dev = data; unsigned int id = pci_dev->irq; return !strcmp(plat_dev->name, "tc35815-mac") && plat_dev->id == id; } diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index c7892c3da91f..ac5d945be88a 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -76,7 +76,7 @@ static struct bus_type nvmem_bus_type = { .name = "nvmem", }; -static int of_nvmem_match(struct device *dev, void *nvmem_np) +static int of_nvmem_match(struct device *dev, const void *nvmem_np) { return dev->of_node == nvmem_np; } diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 3b67896d9d74..44f53496cab1 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -281,7 +281,7 @@ unregister: EXPORT_SYMBOL(of_mdiobus_register); /* Helper function for of_phy_find_device */ -static int of_phy_match(struct device *dev, void *phy_np) +static int of_phy_match(struct device *dev, const void *phy_np) { return dev->of_node == phy_np; } diff --git a/drivers/of/platform.c b/drivers/of/platform.c index efbff44581b3..7801e25e6895 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -37,7 +37,7 @@ static const struct of_device_id of_skipped_node_table[] = { {} /* Empty terminated list */ }; -static int of_dev_node_match(struct device *dev, void *data) +static int of_dev_node_match(struct device *dev, const void *data) { return dev->of_node == data; } diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 0e8e2c186f50..f9ef7ad3f75d 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -64,7 +64,7 @@ static struct resource *get_pci_domain_busn_res(int domain_nr) return &r->res; } -static int find_anything(struct device *dev, void *data) +static int find_anything(struct device *dev, const void *data) { return 1; } diff --git a/drivers/pci/search.c b/drivers/pci/search.c index 5c7922612733..7f4e65872b8d 100644 --- a/drivers/pci/search.c +++ b/drivers/pci/search.c @@ -236,10 +236,10 @@ struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus, } EXPORT_SYMBOL(pci_get_domain_bus_and_slot); -static int match_pci_dev_by_id(struct device *dev, void *data) +static int match_pci_dev_by_id(struct device *dev, const void *data) { struct pci_dev *pdev = to_pci_dev(dev); - struct pci_device_id *id = data; + const struct pci_device_id *id = data; if (pci_match_one_device(id, pdev)) return 1; diff --git a/drivers/pinctrl/devicetree.c b/drivers/pinctrl/devicetree.c index f7e354f85518..88ddbb2e30de 100644 --- a/drivers/pinctrl/devicetree.c +++ b/drivers/pinctrl/devicetree.c @@ -112,12 +112,11 @@ static int dt_to_map_one_config(struct pinctrl *p, np_pctldev = of_get_next_parent(np_pctldev); if (!np_pctldev || of_node_is_root(np_pctldev)) { of_node_put(np_pctldev); - ret = driver_deferred_probe_check_state(p->dev); /* keep deferring if modules are enabled unless we've timed out */ - if (IS_ENABLED(CONFIG_MODULES) && !allow_default && ret == -ENODEV) - ret = -EPROBE_DEFER; + if (IS_ENABLED(CONFIG_MODULES) && !allow_default) + return driver_deferred_probe_check_state_continue(p->dev); - return ret; + return driver_deferred_probe_check_state(p->dev); } /* If we're creating a hog we can use the passed pctldev */ if (hog_pctldev && (np_pctldev == p->dev->of_node)) { diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index 4ebf6d4fc66c..c522e9313c50 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -581,7 +581,7 @@ int ccwgroup_driver_register(struct ccwgroup_driver *cdriver) } EXPORT_SYMBOL(ccwgroup_driver_register); -static int __ccwgroup_match_all(struct device *dev, void *data) +static int __ccwgroup_match_all(struct device *dev, const void *data) { return 1; } @@ -608,9 +608,9 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver) } EXPORT_SYMBOL(ccwgroup_driver_unregister); -static int __ccwgroupdev_check_busid(struct device *dev, void *id) +static int __ccwgroupdev_check_busid(struct device *dev, const void *id) { - char *bus_id = id; + const char *bus_id = id; return (strcmp(bus_id, dev_name(dev)) == 0); } diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c index 8d9f36625ba5..8f080d3fd380 100644 --- a/drivers/s390/cio/chsc_sch.c +++ b/drivers/s390/cio/chsc_sch.c @@ -203,7 +203,7 @@ static void chsc_cleanup_sch_driver(void) static DEFINE_SPINLOCK(chsc_lock); -static int chsc_subchannel_match_next_free(struct device *dev, void *data) +static int chsc_subchannel_match_next_free(struct device *dev, const void *data) { struct subchannel *sch = to_subchannel(dev); diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index e1f2d0eed544..22c55816100b 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -491,10 +491,10 @@ static int css_probe_device(struct subchannel_id schid, struct schib *schib) } static int -check_subchannel(struct device * dev, void * data) +check_subchannel(struct device *dev, const void *data) { struct subchannel *sch; - struct subchannel_id *schid = data; + struct subchannel_id *schid = (void *)data; sch = to_subchannel(dev); return schid_equal(&sch->schid, schid); diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 9985b7484a6b..c421899be20f 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -643,10 +643,10 @@ static int ccw_device_add(struct ccw_device *cdev) return device_add(dev); } -static int match_dev_id(struct device *dev, void *data) +static int match_dev_id(struct device *dev, const void *data) { struct ccw_device *cdev = to_ccwdev(dev); - struct ccw_dev_id *dev_id = data; + struct ccw_dev_id *dev_id = (void *)data; return ccw_dev_id_is_equal(&cdev->private->dev_id, dev_id); } @@ -1699,11 +1699,9 @@ EXPORT_SYMBOL_GPL(ccw_device_force_console); * get ccw_device matching the busid, but only if owned by cdrv */ static int -__ccwdev_check_busid(struct device *dev, void *id) +__ccwdev_check_busid(struct device *dev, const void *id) { - char *bus_id; - - bus_id = id; + const char *bus_id = id; return (strcmp(bus_id, dev_name(dev)) == 0); } diff --git a/drivers/s390/cio/scm.c b/drivers/s390/cio/scm.c index 6bca1d5455d4..9f26d4310bb3 100644 --- a/drivers/s390/cio/scm.c +++ b/drivers/s390/cio/scm.c @@ -174,10 +174,10 @@ out: kobject_uevent(&scmdev->dev.kobj, KOBJ_CHANGE); } -static int check_address(struct device *dev, void *data) +static int check_address(struct device *dev, const void *data) { struct scm_device *scmdev = to_scm_dev(dev); - struct sale *sale = data; + const struct sale *sale = data; return scmdev->address == sale->sa; } diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index b9fc502c58c2..b7902b643ec8 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -1356,16 +1356,16 @@ static int ap_get_compatible_type(ap_qid_t qid, int rawtype, unsigned int func) * Helper function to be used with bus_find_dev * matches for the card device with the given id */ -static int __match_card_device_with_id(struct device *dev, void *data) +static int __match_card_device_with_id(struct device *dev, const void *data) { - return is_card_dev(dev) && to_ap_card(dev)->id == (int)(long) data; + return is_card_dev(dev) && to_ap_card(dev)->id == (int)(long)(void *) data; } /* * Helper function to be used with bus_find_dev * matches for the queue device with a given qid */ -static int __match_queue_device_with_qid(struct device *dev, void *data) +static int __match_queue_device_with_qid(struct device *dev, const void *data) { return is_queue_dev(dev) && to_ap_queue(dev)->qid == (int)(long) data; } @@ -1374,7 +1374,7 @@ static int __match_queue_device_with_qid(struct device *dev, void *data) * Helper function to be used with bus_find_dev * matches any queue device with given queue id */ -static int __match_queue_device_with_queue_id(struct device *dev, void *data) +static int __match_queue_device_with_queue_id(struct device *dev, const void *data) { return is_queue_dev(dev) && AP_QID_QUEUE(to_ap_queue(dev)->qid) == (int)(long) data; diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c index 2c9fb1423a39..7e85ba7c6ef0 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -26,7 +26,7 @@ static int vfio_ap_mdev_reset_queues(struct mdev_device *mdev); -static int match_apqn(struct device *dev, void *data) +static int match_apqn(struct device *dev, const void *data) { struct vfio_ap_queue *q = dev_get_drvdata(dev); diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c index 7f0ceb65c3f3..c074631086a4 100644 --- a/drivers/scsi/scsi_proc.c +++ b/drivers/scsi/scsi_proc.c @@ -372,7 +372,7 @@ static ssize_t proc_scsi_write(struct file *file, const char __user *buf, return err; } -static int always_match(struct device *dev, void *data) +static int always_match(struct device *dev, const void *data) { return 1; } diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 91673351bcf3..75ac046cae52 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -3652,7 +3652,7 @@ EXPORT_SYMBOL_GPL(spi_write_then_read); /*-------------------------------------------------------------------------*/ #if IS_ENABLED(CONFIG_OF) -static int __spi_of_device_match(struct device *dev, void *data) +static int __spi_of_device_match(struct device *dev, const void *data) { return dev->of_node == data; } @@ -3753,7 +3753,7 @@ static int spi_acpi_controller_match(struct device *dev, const void *data) return ACPI_COMPANION(dev->parent) == data; } -static int spi_acpi_device_match(struct device *dev, void *data) +static int spi_acpi_device_match(struct device *dev, const void *data) { return ACPI_COMPANION(dev) == data; } diff --git a/drivers/staging/most/core.c b/drivers/staging/most/core.c index 86a8545c8d97..b9841adb7181 100644 --- a/drivers/staging/most/core.c +++ b/drivers/staging/most/core.c @@ -561,13 +561,6 @@ static int split_string(char *buf, char **a, char **b, char **c, char **d) return 0; } -static int match_bus_dev(struct device *dev, void *data) -{ - char *mdev_name = data; - - return !strcmp(dev_name(dev), mdev_name); -} - /** * get_channel - get pointer to channel * @mdev: name of the device interface @@ -579,7 +572,7 @@ static struct most_channel *get_channel(char *mdev, char *mdev_ch) struct most_interface *iface; struct most_channel *c, *tmp; - dev = bus_find_device(&mc.bus, NULL, mdev, match_bus_dev); + dev = bus_find_device_by_name(&mc.bus, NULL, mdev); if (!dev) return NULL; iface = to_most_interface(dev); diff --git a/drivers/thermal/broadcom/bcm2835_thermal.c b/drivers/thermal/broadcom/bcm2835_thermal.c index ba39647a690c..3199977f1e73 100644 --- a/drivers/thermal/broadcom/bcm2835_thermal.c +++ b/drivers/thermal/broadcom/bcm2835_thermal.c @@ -123,8 +123,6 @@ static void bcm2835_thermal_debugfs(struct platform_device *pdev) struct debugfs_regset32 *regset; data->debugfsdir = debugfs_create_dir("bcm2835_thermal", NULL); - if (!data->debugfsdir) - return; regset = devm_kzalloc(&pdev->dev, sizeof(*regset), GFP_KERNEL); if (!regset) diff --git a/drivers/thermal/intel/intel_powerclamp.c b/drivers/thermal/intel/intel_powerclamp.c index 79d214b7291c..5149a817456b 100644 --- a/drivers/thermal/intel/intel_powerclamp.c +++ b/drivers/thermal/intel/intel_powerclamp.c @@ -698,17 +698,9 @@ DEFINE_SHOW_ATTRIBUTE(powerclamp_debug); static inline void powerclamp_create_debug_files(void) { debug_dir = debugfs_create_dir("intel_powerclamp", NULL); - if (!debug_dir) - return; - - if (!debugfs_create_file("powerclamp_calib", S_IRUGO, debug_dir, - cal_data, &powerclamp_debug_fops)) - goto file_error; - return; - -file_error: - debugfs_remove_recursive(debug_dir); + debugfs_create_file("powerclamp_calib", S_IRUGO, debug_dir, cal_data, + &powerclamp_debug_fops); } static enum cpuhp_state hp_state; diff --git a/drivers/thermal/intel/x86_pkg_temp_thermal.c b/drivers/thermal/intel/x86_pkg_temp_thermal.c index e85d54d1cdf3..ddb4a973c698 100644 --- a/drivers/thermal/intel/x86_pkg_temp_thermal.c +++ b/drivers/thermal/intel/x86_pkg_temp_thermal.c @@ -75,29 +75,14 @@ static struct dentry *debugfs; static unsigned int pkg_interrupt_cnt; static unsigned int pkg_work_cnt; -static int pkg_temp_debugfs_init(void) +static void pkg_temp_debugfs_init(void) { - struct dentry *d; - debugfs = debugfs_create_dir("pkg_temp_thermal", NULL); - if (!debugfs) - return -ENOENT; - - d = debugfs_create_u32("pkg_thres_interrupt", S_IRUGO, debugfs, - &pkg_interrupt_cnt); - if (!d) - goto err_out; - - d = debugfs_create_u32("pkg_thres_work", S_IRUGO, debugfs, - &pkg_work_cnt); - if (!d) - goto err_out; - return 0; - -err_out: - debugfs_remove_recursive(debugfs); - return -ENOENT; + debugfs_create_u32("pkg_thres_interrupt", S_IRUGO, debugfs, + &pkg_interrupt_cnt); + debugfs_create_u32("pkg_thres_work", S_IRUGO, debugfs, + &pkg_work_cnt); } /* diff --git a/drivers/thermal/tegra/soctherm.c b/drivers/thermal/tegra/soctherm.c index fcf70a3728b6..43941eb734eb 100644 --- a/drivers/thermal/tegra/soctherm.c +++ b/drivers/thermal/tegra/soctherm.c @@ -1485,23 +1485,13 @@ DEFINE_SHOW_ATTRIBUTE(regs); static void soctherm_debug_init(struct platform_device *pdev) { struct tegra_soctherm *tegra = platform_get_drvdata(pdev); - struct dentry *root, *file; + struct dentry *root; root = debugfs_create_dir("soctherm", NULL); - if (!root) { - dev_err(&pdev->dev, "failed to create debugfs directory\n"); - return; - } tegra->debugfs_dir = root; - file = debugfs_create_file("reg_contents", 0644, root, - pdev, ®s_fops); - if (!file) { - dev_err(&pdev->dev, "failed to create debugfs file\n"); - debugfs_remove_recursive(tegra->debugfs_dir); - tegra->debugfs_dir = NULL; - } + debugfs_create_file("reg_contents", 0644, root, pdev, ®s_fops); } #else static inline void soctherm_debug_init(struct platform_device *pdev) {} diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 10b56c66fec3..5668a44e0653 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -1967,10 +1967,10 @@ struct tb_sw_lookup { u64 route; }; -static int tb_switch_match(struct device *dev, void *data) +static int tb_switch_match(struct device *dev, const void *data) { struct tb_switch *sw = tb_to_switch(dev); - struct tb_sw_lookup *lookup = data; + const struct tb_sw_lookup *lookup = data; if (!sw) return 0; diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index e2f316ac8b01..b265ab5405f9 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -942,9 +942,9 @@ error: return ret; } -static int match_devt(struct device *dev, void *data) +static int match_devt(struct device *dev, const void *data) { - return dev->devt == (dev_t) (unsigned long) data; + return dev->devt == (dev_t)(unsigned long)(void *)data; } static struct usb_device *usbdev_lookup_by_devt(dev_t devt) diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 5a0df527a8ca..0ab8738047da 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -325,9 +325,9 @@ struct find_interface_arg { struct device_driver *drv; }; -static int __find_interface(struct device *dev, void *data) +static int __find_interface(struct device *dev, const void *data) { - struct find_interface_arg *arg = data; + const struct find_interface_arg *arg = data; struct usb_interface *intf; if (!is_usb_interface(dev)) diff --git a/drivers/usb/phy/phy-am335x-control.c b/drivers/usb/phy/phy-am335x-control.c index a3cb25cb74f8..d16dfc320faa 100644 --- a/drivers/usb/phy/phy-am335x-control.c +++ b/drivers/usb/phy/phy-am335x-control.c @@ -118,9 +118,9 @@ static const struct of_device_id omap_control_usb_id_table[] = { MODULE_DEVICE_TABLE(of, omap_control_usb_id_table); static struct platform_driver am335x_control_driver; -static int match(struct device *dev, void *data) +static int match(struct device *dev, const void *data) { - struct device_node *node = (struct device_node *)data; + const struct device_node *node = (const struct device_node *)data; return dev->of_node == node && dev->driver == &am335x_control_driver.driver; } diff --git a/drivers/usb/phy/phy-isp1301.c b/drivers/usb/phy/phy-isp1301.c index 93b7d6a30aad..6cf6fbd39237 100644 --- a/drivers/usb/phy/phy-isp1301.c +++ b/drivers/usb/phy/phy-isp1301.c @@ -142,9 +142,9 @@ static struct i2c_driver isp1301_driver = { module_i2c_driver(isp1301_driver); -static int match(struct device *dev, void *data) +static int match(struct device *dev, const void *data) { - struct device_node *node = (struct device_node *)data; + const struct device_node *node = (const struct device_node *)data; return (dev->of_node == node) && (dev->driver == &isp1301_driver.driver); } diff --git a/drivers/visorbus/visorbus_main.c b/drivers/visorbus/visorbus_main.c index 0b2434cc4ecd..152fd29f04f2 100644 --- a/drivers/visorbus/visorbus_main.c +++ b/drivers/visorbus/visorbus_main.c @@ -171,10 +171,10 @@ struct visor_busdev { u32 dev_no; }; -static int match_visorbus_dev_by_id(struct device *dev, void *data) +static int match_visorbus_dev_by_id(struct device *dev, const void *data) { struct visor_device *vdev = to_visor_device(dev); - struct visor_busdev *id = data; + const struct visor_busdev *id = data; if (vdev->chipset_bus_no == id->bus_no && vdev->chipset_dev_no == id->dev_no) diff --git a/drivers/watchdog/bcm_kona_wdt.c b/drivers/watchdog/bcm_kona_wdt.c index e2ad44816359..921291025680 100644 --- a/drivers/watchdog/bcm_kona_wdt.c +++ b/drivers/watchdog/bcm_kona_wdt.c @@ -143,24 +143,18 @@ static void bcm_kona_wdt_debug_init(struct platform_device *pdev) wdt->debugfs = NULL; dir = debugfs_create_dir(BCM_KONA_WDT_NAME, NULL); - if (IS_ERR_OR_NULL(dir)) - return; - if (debugfs_create_file("info", S_IFREG | S_IRUGO, dir, wdt, - &bcm_kona_fops)) - wdt->debugfs = dir; - else - debugfs_remove_recursive(dir); + debugfs_create_file("info", S_IFREG | S_IRUGO, dir, wdt, + &bcm_kona_fops); + wdt->debugfs = dir; } static void bcm_kona_wdt_debug_exit(struct platform_device *pdev) { struct bcm_kona_wdt *wdt = platform_get_drvdata(pdev); - if (wdt && wdt->debugfs) { + if (wdt) debugfs_remove_recursive(wdt->debugfs); - wdt->debugfs = NULL; - } } #else diff --git a/drivers/watchdog/mei_wdt.c b/drivers/watchdog/mei_wdt.c index 8023cf28657a..96a770938ff0 100644 --- a/drivers/watchdog/mei_wdt.c +++ b/drivers/watchdog/mei_wdt.c @@ -539,38 +539,23 @@ static void dbgfs_unregister(struct mei_wdt *wdt) wdt->dbgfs_dir = NULL; } -static int dbgfs_register(struct mei_wdt *wdt) +static void dbgfs_register(struct mei_wdt *wdt) { - struct dentry *dir, *f; + struct dentry *dir; dir = debugfs_create_dir(KBUILD_MODNAME, NULL); - if (!dir) - return -ENOMEM; - wdt->dbgfs_dir = dir; - f = debugfs_create_file("state", S_IRUSR, dir, wdt, &dbgfs_fops_state); - if (!f) - goto err; - f = debugfs_create_file("activation", S_IRUSR, - dir, wdt, &dbgfs_fops_activation); - if (!f) - goto err; + debugfs_create_file("state", S_IRUSR, dir, wdt, &dbgfs_fops_state); - return 0; -err: - dbgfs_unregister(wdt); - return -ENODEV; + debugfs_create_file("activation", S_IRUSR, dir, wdt, + &dbgfs_fops_activation); } #else static inline void dbgfs_unregister(struct mei_wdt *wdt) {} - -static inline int dbgfs_register(struct mei_wdt *wdt) -{ - return 0; -} +static inline void dbgfs_register(struct mei_wdt *wdt) {} #endif /* CONFIG_DEBUG_FS */ static int mei_wdt_probe(struct mei_cl_device *cldev, @@ -623,8 +608,7 @@ static int mei_wdt_probe(struct mei_cl_device *cldev, if (ret) goto err_disable; - if (dbgfs_register(wdt)) - dev_warn(&cldev->dev, "cannot register debugfs\n"); + dbgfs_register(wdt); return 0; |