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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-05 06:07:20 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-05 06:07:20 +0300 |
commit | 06dd3dfeea60e2a6457a6aedf97afc8e6d2ba497 (patch) | |
tree | 1d8b9efbd7cd3dbb5d7b7663d7fd2de61b26f453 /lib | |
parent | 38047d5c269bbdedf900fc86954913f3dffa01f1 (diff) | |
parent | 86f690e8bfd124c38940e7ad58875ef383003348 (diff) | |
download | linux-06dd3dfeea60e2a6457a6aedf97afc8e6d2ba497.tar.xz |
Merge tag 'char-misc-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc updates from Greg KH:
"Here is the big set of char/misc driver patches for 4.17-rc1.
There are a lot of little things in here, nothing huge, but all
important to the different hardware types involved:
- thunderbolt driver updates
- parport updates (people still care...)
- nvmem driver updates
- mei updates (as always)
- hwtracing driver updates
- hyperv driver updates
- extcon driver updates
- ... and a handful of even smaller driver subsystem and individual
driver updates
All of these have been in linux-next with no reported issues"
* tag 'char-misc-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (149 commits)
hwtracing: Add HW tracing support menu
intel_th: Add ACPI glue layer
intel_th: Allow forcing host mode through drvdata
intel_th: Pick up irq number from resources
intel_th: Don't touch switch routing in host mode
intel_th: Use correct method of finding hub
intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate
stm class: Make dummy's master/channel ranges configurable
stm class: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate
MAINTAINERS: Bestow upon myself the care for drivers/hwtracing
hv: add SPDX license id to Kconfig
hv: add SPDX license to trace
Drivers: hv: vmbus: do not mark HV_PCIE as perf_device
Drivers: hv: vmbus: respect what we get from hv_get_synint_state()
/dev/mem: Avoid overwriting "err" in read_mem()
eeprom: at24: use SPDX identifier instead of GPL boiler-plate
eeprom: at24: simplify the i2c functionality checking
eeprom: at24: fix a line break
eeprom: at24: tweak newlines
eeprom: at24: refactor at24_probe()
...
Diffstat (limited to 'lib')
-rw-r--r-- | lib/devres.c | 78 |
1 files changed, 38 insertions, 40 deletions
diff --git a/lib/devres.c b/lib/devres.c index 5f2aedd58bc5..5bec1120b392 100644 --- a/lib/devres.c +++ b/lib/devres.c @@ -5,6 +5,12 @@ #include <linux/gfp.h> #include <linux/export.h> +enum devm_ioremap_type { + DEVM_IOREMAP = 0, + DEVM_IOREMAP_NC, + DEVM_IOREMAP_WC, +}; + void devm_ioremap_release(struct device *dev, void *res) { iounmap(*(void __iomem **)res); @@ -15,24 +21,28 @@ static int devm_ioremap_match(struct device *dev, void *res, void *match_data) return *(void **)res == match_data; } -/** - * devm_ioremap - Managed ioremap() - * @dev: Generic device to remap IO address for - * @offset: Resource address to map - * @size: Size of map - * - * Managed ioremap(). Map is automatically unmapped on driver detach. - */ -void __iomem *devm_ioremap(struct device *dev, resource_size_t offset, - resource_size_t size) +static void __iomem *__devm_ioremap(struct device *dev, resource_size_t offset, + resource_size_t size, + enum devm_ioremap_type type) { - void __iomem **ptr, *addr; + void __iomem **ptr, *addr = NULL; ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return NULL; - addr = ioremap(offset, size); + switch (type) { + case DEVM_IOREMAP: + addr = ioremap(offset, size); + break; + case DEVM_IOREMAP_NC: + addr = ioremap_nocache(offset, size); + break; + case DEVM_IOREMAP_WC: + addr = ioremap_wc(offset, size); + break; + } + if (addr) { *ptr = addr; devres_add(dev, ptr); @@ -41,6 +51,20 @@ void __iomem *devm_ioremap(struct device *dev, resource_size_t offset, return addr; } + +/** + * devm_ioremap - Managed ioremap() + * @dev: Generic device to remap IO address for + * @offset: Resource address to map + * @size: Size of map + * + * Managed ioremap(). Map is automatically unmapped on driver detach. + */ +void __iomem *devm_ioremap(struct device *dev, resource_size_t offset, + resource_size_t size) +{ + return __devm_ioremap(dev, offset, size, DEVM_IOREMAP); +} EXPORT_SYMBOL(devm_ioremap); /** @@ -55,20 +79,7 @@ EXPORT_SYMBOL(devm_ioremap); void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset, resource_size_t size) { - void __iomem **ptr, *addr; - - ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); - if (!ptr) - return NULL; - - addr = ioremap_nocache(offset, size); - if (addr) { - *ptr = addr; - devres_add(dev, ptr); - } else - devres_free(ptr); - - return addr; + return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_NC); } EXPORT_SYMBOL(devm_ioremap_nocache); @@ -83,20 +94,7 @@ EXPORT_SYMBOL(devm_ioremap_nocache); void __iomem *devm_ioremap_wc(struct device *dev, resource_size_t offset, resource_size_t size) { - void __iomem **ptr, *addr; - - ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); - if (!ptr) - return NULL; - - addr = ioremap_wc(offset, size); - if (addr) { - *ptr = addr; - devres_add(dev, ptr); - } else - devres_free(ptr); - - return addr; + return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_WC); } EXPORT_SYMBOL(devm_ioremap_wc); |