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2019-07-08debugfs: make error message a bit more verboseGreg Kroah-Hartman1-1/+6
When a file/directory is already present in debugfs, and it is attempted to be created again, be more specific about what file/directory is being created and where it is trying to be created to give a bit more help to developers to figure out the problem. Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Mark Brown <broonie@kernel.org> Cc: Takashi Iwai <tiwai@suse.de> Reviewed-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20190706154256.GA2683@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-04orangefs: fix build warning from debugfs cleanup patchGreg Kroah-Hartman3-21/+6
Stephen writes: After merging the driver-core tree, today's linux-next build (x86_64 allmodconfig) produced this warning: fs/orangefs/orangefs-debugfs.c: In function 'orangefs_debugfs_init': fs/orangefs/orangefs-debugfs.c:193:1: warning: label 'out' defined but not used [-Wunused-label] out: ^~~ fs/orangefs/orangefs-debugfs.c: In function 'orangefs_kernel_debug_init': fs/orangefs/orangefs-debugfs.c:204:17: warning: unused variable 'ret' [-Wunused-variable] struct dentry *ret; ^~~ Fix this up and change the return type of the function to void as it can not fail, which cleans up some more code and variables as well. Cc: Mike Marshall <hubcap@omnibond.com> Cc: Martin Brandenburg <martin@omnibond.com> Cc: devel@lists.orangefs.org Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Fixes: f095adba36bb ("orangefs: no need to check return value of debugfs_create functions") Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-04ubifs: fix build warning after debugfs cleanup patchGreg Kroah-Hartman1-1/+1
Stephen writes: After merging the driver-core tree, today's linux-next build (arm multi_v7_defconfig) produced this warning: fs/ubifs/debug.c: In function 'dbg_debugfs_init_fs': fs/ubifs/debug.c:2812:6: warning: unused variable 'err' [-Wunused-variable] int err, n; ^~~ So fix this up properly. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Richard Weinberger <richard@nod.at> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: linux-mtd@lists.infradead.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03driver: core: Allow subsystems to continue deferring probeThierry Reding3-12/+51
Some subsystems, such as pinctrl, allow continuing to defer probe indefinitely. This is useful for devices that depend on resources provided by devices that are only probed after the init stage. One example of this can be seen on Tegra, where the DPAUX hardware contains pinmuxing controls for pins that it shares with an I2C controller. The I2C controller is typically used for communication with a monitor over HDMI (DDC). However, other instances of the I2C controller are used to access system critical components, such as a PMIC. The I2C controller driver will therefore usually be a builtin driver, whereas the DPAUX driver is part of the display driver that is loaded from a module to avoid bloating the kernel image with all of the DRM/KMS subsystem. In this particular case the pins used by this I2C/DDC controller become accessible very late in the boot process. However, since the controller is only used in conjunction with display, that's not an issue. Unfortunately the driver core currently outputs a warning message when a device fails to get the pinctrl before the end of the init stage. That can be confusing for the user because it may sound like an unwanted error occurred, whereas it's really an expected and harmless situation. In order to eliminate this warning, this patch allows callers of the driver_deferred_probe_check_state() helper to specify that they want to continue deferring probe, regardless of whether we're past the init stage or not. All of the callers of that function are updated for the new signature, but only the pinctrl subsystem passes a true value in the new persist parameter if appropriate. Signed-off-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20190621151725.20414-1-thierry.reding@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDTJames Morse2-1/+3
The cacheinfo structures are alloced/freed by cpu online/offline callbacks. Originally these were only used by sysfs to expose the cache topology to user space. Without any in-kernel dependencies CPUHP_AP_ONLINE_DYN was an appropriate choice. resctrl has started using these structures to identify CPUs that share a cache. It updates its 'domain' structures from cpu online/offline callbacks. These depend on the cacheinfo structures (resctrl_online_cpu()->domain_add_cpu()->get_cache_id()-> get_cpu_cacheinfo()). These also run as CPUHP_AP_ONLINE_DYN. Now that there is an in-kernel dependency, move the cacheinfo work earlier so we know its done before resctrl's CPUHP_AP_ONLINE_DYN work runs. Fixes: 2264d9c74dda1 ("x86/intel_rdt: Build structures for each resource based on cache topology") Cc: <stable@vger.kernel.org> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20190624173656.202407-1-james.morse@arm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03arch_topology: Remove error messages on out-of-memory conditionsGeert Uytterhoeven1-4/+1
There is no need to print error messages if kcalloc() or alloc_cpumask_var() fail, as the memory allocation core already takes care of that. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20190527122703.6303-1-geert+renesas@glider.be Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03lib: notifier-error-inject: no need to check return value of debugfs_create ↵Greg Kroah-Hartman1-12/+1
functions When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190612153613.GA21239@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03swiotlb: no need to check return value of debugfs_create functionsGreg Kroah-Hartman1-21/+4
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: iommu@lists.linux-foundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190612144314.GA16803@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03ceph: no need to check return value of debugfs_create functionsGreg Kroah-Hartman6-61/+11
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. This cleanup allows the return value of the functions to be made void, as no logic should care if these files succeed or not. Cc: "Yan, Zheng" <zyan@redhat.com> Cc: Sage Weil <sage@redhat.com> Cc: Ilya Dryomov <idryomov@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: ceph-devel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190612145538.GA18772@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03sunrpc: no need to check return value of debugfs_create functionsGreg Kroah-Hartman1-55/+11
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Jeff Layton <jlayton@kernel.org> Cc: Trond Myklebust <trond.myklebust@hammerspace.com> Cc: Anna Schumaker <anna.schumaker@netapp.com> Cc: linux-nfs@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190612145622.GA18839@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03ubifs: no need to check return value of debugfs_create functionsGreg Kroah-Hartman3-135/+45
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Richard Weinberger <richard@nod.at> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: linux-mtd@lists.infradead.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190612152120.GA17450@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03orangefs: no need to check return value of debugfs_create functionsGreg Kroah-Hartman1-31/+4
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Mike Marshall <hubcap@omnibond.com> Cc: Martin Brandenburg <martin@omnibond.com> Cc: devel@lists.orangefs.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190612152204.GA17511@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03nfsd: no need to check return value of debugfs_create functionsGreg Kroah-Hartman3-16/+5
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Jeff Layton <jlayton@kernel.org> Cc: linux-nfs@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190612152603.GB18440@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03lib: 842: no need to check return value of debugfs_create functionsGreg Kroah-Hartman1-4/+1
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Haren Myneni <haren@us.ibm.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190612153440.GA21006@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03debugfs: provide pr_fmt() macroGreg Kroah-Hartman1-1/+3
Use a common "debugfs: " prefix for all pr_* calls in a single place. Cc: Mark Brown <broonie@kernel.org> Reviewed-by: Takashi Iwai <tiwai@suse.de> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190703071653.2799-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03debugfs: log errors when something goes wrongGreg Kroah-Hartman1-5/+20
As it is not recommended that debugfs calls be checked, it was pointed out that major errors should still be logged somewhere so that developers and users have a chance to figure out what went wrong. To help with this, error logging has been added to the debugfs core so that it is not needed to be present in every individual file that calls debugfs. Reported-by: Mark Brown <broonie@kernel.org> Reported-by: Takashi Iwai <tiwai@suse.de> Reviewed-by: Mark Brown <broonie@kernel.org> Reviewed-by: Takashi Iwai <tiwai@suse.de> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190703071653.2799-2-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-26drivers: s390/cio: Fix compilation warning about const qualifiersSuzuki K Poulose2-4/+2
Update __ccwdev_check_busid() and __ccwgroupdev_check_busid() to use "const" qualifiers to fix the compiler warning. Reported-by: kbuild test robot <lkp@intel.com> Cc: gregkh@linuxfoundation.org Cc: devel@driverdev.osuosl.org Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-24drivers: Add generic helper to match by of_nodeSuzuki K Poulose3-6/+9
Add a helper to match device by the of_node. This will be later used to provide wrappers to the device iterators for {bus/class/driver}_find_device(). Convert other users to reuse this new helper. Cc: Alan Tull <atull@kernel.org> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: David Airlie <airlied@linux.ie> Cc: "David S. Miller" <davem@davemloft.net> Cc: devicetree@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Heiner Kallweit <hkallweit1@gmail.com> Cc: Jiri Slaby <jslaby@suse.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Cc: Lee Jones <lee.jones@linaro.org> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: linux-fpga@vger.kernel.org Cc: linux-i2c@vger.kernel.org Cc: linux-spi@vger.kernel.org Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Mark Brown <broonie@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Maxime Ripard <maxime.ripard@bootlin.com> Cc: Moritz Fischer <mdf@kernel.org> Cc: Peter Rosin <peda@axentia.se> Cc: Rob Herring <robh+dt@kernel.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Thor Thayer <thor.thayer@linux.intel.com> Cc: Wolfram Sang <wsa@the-dreams.de> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Joe Perches <joe@perches.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-24driver_find_device: Unify the match function with class_find_device()Suzuki K Poulose12-21/+21
The driver_find_device() accepts a match function pointer to filter the devices for lookup, similar to bus/class_find_device(). However, there is a minor difference in the prototype for the match parameter for driver_find_device() with the now unified version accepted by {bus/class}_find_device(), where it doesn't accept a "const" qualifier for the data argument. This prevents us from reusing the generic match functions for driver_find_device(). For this reason, change the prototype of the driver_find_device() to make the "match" parameter in line with {bus/class}_find_device() and adjust its callers to use the const qualifier. Also, we could now promote the "data" parameter to const as we pass it down as a const parameter to the match functions. Cc: Corey Minyard <minyard@acm.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Peter Oberparleiter <oberpar@linux.ibm.com> Cc: Sebastian Ott <sebott@linux.ibm.com> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Nehal Shah <nehal-bakulchandra.shah@amd.com> Cc: Shyam Sundar S K <shyam-sundar.s-k@amd.com> Cc: Lee Jones <lee.jones@linaro.org> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-24bus_find_device: Unify the match callback with class_find_deviceSuzuki K Poulose39-68/+67
There is an arbitrary difference between the prototypes of bus_find_device() and class_find_device() preventing their callers from passing the same pair of data and match() arguments to both of them, which is the const qualifier used in the prototype of class_find_device(). If that qualifier is also used in the bus_find_device() prototype, it will be possible to pass the same match() callback function to both bus_find_device() and class_find_device(), which will allow some optimizations to be made in order to avoid code duplication going forward. Also with that, constify the "data" parameter as it is passed as a const to the match function. For this reason, change the prototype of bus_find_device() to match the prototype of class_find_device() and adjust its callers to use the const qualifier in accordance with the new prototype of it. Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Andreas Noever <andreas.noever@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Corey Minyard <minyard@acm.org> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: David Kershner <david.kershner@unisys.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: David Airlie <airlied@linux.ie> Cc: Felipe Balbi <balbi@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Harald Freudenberger <freude@linux.ibm.com> Cc: Hartmut Knaack <knaack.h@gmx.de> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jonathan Cameron <jic23@kernel.org> Cc: "James E.J. Bottomley" <jejb@linux.ibm.com> Cc: Len Brown <lenb@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michael Jamet <michael.jamet@intel.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Peter Oberparleiter <oberpar@linux.ibm.com> Cc: Sebastian Ott <sebott@linux.ibm.com> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Yehezkel Bernat <YehezkelShB@gmail.com> Cc: rafael@kernel.org Acked-by: Corey Minyard <minyard@acm.org> Acked-by: David Kershner <david.kershner@unisys.com> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Acked-by: Wolfram Sang <wsa@the-dreams.de> # for the I2C parts Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-24acpi: utils: Cleanup acpi_dev_match_cbSuzuki K Poulose1-6/+1
The prototype of bus_find_device() will be unified with that of class_find_device() subsequently, but for this purpose the callback functions passed to it need to take (const void *) as the second argument. Consequently, they cannot modify the memory pointed to by that argument which currently is not the case for acpi_dev_match_cb(). However, acpi_dev_match_cb() really need not modify the "match" object passed to it, because acpi_dev_get_first_match_dev() which uses it via bus_find_device() can easily convert the result of bus_find_device() into the pointer to return. For this reason, update acpi_dev_match_cb() to avoid the redundant memory updates. Cc: Len Brown <lenb@kernel.org> Cc: linux-acpi@vger.kernel.org Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-24mfd: Remove unused helper syscon_regmap_lookup_by_pdevnameSuzuki K Poulose2-27/+0
Nobody uses the exported helper syscon_regmap_lookup_by_pdevname, to lookup a device by name. Let us remove it. Suggested-by: Arnd Bergman <arnd@arnd.de> Cc: Arnd Bergman <arnd@arnd.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-24staging: most-core: Use bus_find_device_by_nameSuzuki K Poulose1-8/+1
Use bus_find_device_by_name() helper instead of writing our own helper. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Christian Gromm <christian.gromm@microchip.com> Cc: "Gustavo A. R. Silva" <gustavo@embeddedor.com> Cc: Colin Ian King <colin.king@canonical.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-23lkdtm: remove redundant initialization of retColin Ian King1-1/+1
The variable ret is being initialized with the value -EINVAL however this value is never read and ret is being re-assigned later on. Hence the initialization is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21ABI: sysfs-driver-mlxreg-io: fix the what fieldsMauro Carvalho Chehab1-26/+19
The author of this file should be given an award for creativity: the What: fields on this file technically fulfills the description at README. Yet, the way it is, it can't be parsed on a script, and if someone would try to do something like: grep hwmon*/jtag_enable It wouldn't find anything. Fix the What fields in a way that it can be parseable by a script and other search tools. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21doc: ABI scripts: add a SPDX header fileMauro Carvalho Chehab1-0/+1
released under GPL v2. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21scripts/get_abi.pl: add a validate commandMauro Carvalho Chehab1-7/+9
Sometimes, we just want the parser to retrieve all symbols from ABI, in order to check for parsing errors. So, add a new "validate" command. While here, update the man/help pages. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21scripts/get_abi.pl: add a handler for invalid "where" tagMauro Carvalho Chehab1-0/+6
The ABI README file doesn't provide any meaning for a Where: tag. Yet, a few ABI symbols use it. So, make the parser handle it, emitting a warning. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21scripts/get_abi.pl: avoid creating duplicate namesMauro Carvalho Chehab1-0/+9
The file the Documentation/ABI/testing/sysfs-class-power has voltage_min, voltage_max and voltage_now symbols duplicated. They are defined first for "General Properties" and then for "USB Properties". This cause those warnings: get_abi.pl rest --dir $srctree/Documentation/ABI/testing:26933: WARNING: Duplicate explicit target name: "abi_sys_class_power_supply_supply_name_voltage_max". get_abi.pl rest --dir $srctree/Documentation/ABI/testing:26968: WARNING: Duplicate explicit target name: "abi_sys_class_power_supply_supply_name_voltage_min". get_abi.pl rest --dir $srctree/Documentation/ABI/testing:27008: WARNING: Duplicate explicit target name: "abi_sys_class_power_supply_supply_name_voltage_now". And, as the references are not valid, it will also generate warnings about links to undefined references. Fix it by storing labels into a hash table and, when a duplicated one is found, appending random characters at the end. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21scripts/get_abi.pl: fix parse issues with some filesMauro Carvalho Chehab1-2/+2
A few files are failing to parse: Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats Documentation/ABI/testing/sysfs-class-pktcdvd Documentation/ABI/testing/sysfs-bus-nfit On all three files, the problem is that there is a ":" character at the initial file description. Improve the parse in order to handle those special cases. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21scripts/get_abi.pl: represent what in tablesMauro Carvalho Chehab1-5/+36
Several entries at the ABI have multiple What: with the same description. Instead of showing those symbols as sections, let's show them as tables. That makes easier to read on the final output, and avoid too much recursion at Sphinx parsing. We need to put file references at the end, as we don't want non-file tables to be mangled with other entries. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21scripts/get_abi.pl: add support for searching for ABI symbolsMauro Carvalho Chehab1-9/+103
Change its syntax to allow switching between ReST output mode and a new search mode, with allows to seek for ABI symbols using regex. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21scripts/get_abi.pl: split label naming from xref logicMauro Carvalho Chehab1-41/+53
Instead of using a ReST compilant label while parsing, move the label to ReST output. That makes the parsing logic more generic, allowing it to provide other types of output. As a side effect, now all files used to generate the output will be output. We can later add command line arguments to filter. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21scripts/get_abi.pl: avoid use literal blocks when not neededMauro Carvalho Chehab1-25/+77
The usage of literal blocks make the document very complex, causing the browser to take a long time to load. On most ABI descriptions, they're a plain text, and don't require a literal block. So, add a logic there with identifies when a literal block is needed. As, on literal blocks, we need to respect the original document space, the most complex part of this patch is to preserve the original spacing where needed. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21scripts/get_abi.pl: parse files with text at beginningMauro Carvalho Chehab1-5/+54
It sounds usefult o parse files with has some text at the beginning. Add support for it. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21scripts: add an script to parse the ABI filesMauro Carvalho Chehab1-0/+212
Add a script to parse the Documentation/ABI files and produce an output with all entries inside an ABI (sub)directory. Right now, it outputs its contents on ReST format. It shouldn't be hard to make it produce other kind of outputs, since the ABI file parser is implemented in separate than the output generator. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21docs: driver-model: convert docs to ReST and rename to *.rstMauro Carvalho Chehab18-443/+491
Convert the various documents at the driver-model, preparing them to be part of the driver-api book. The conversion is actually: - add blank lines and identation in order to identify paragraphs; - fix tables markups; - add some lists markups; - mark literal blocks; - adjust title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> # ice Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21drivers: base/node.c: fixes a kernel-doc markupsMauro Carvalho Chehab1-2/+3
There was a typo at the name of the vars inside the kernel-doc comment, causing those warnings: ./drivers/base/node.c:690: warning: Function parameter or member 'mem_nid' not described in 'register_memory_node_under_compute_node' ./drivers/base/node.c:690: warning: Function parameter or member 'cpu_nid' not described in 'register_memory_node_under_compute_node' ./drivers/base/node.c:690: warning: Excess function parameter 'mem_node' description in 'register_memory_node_under_compute_node' ./drivers/base/node.c:690: warning: Excess function parameter 'cpu_node' description in 'register_memory_node_under_compute_node' There's also a description missing here: ./drivers/base/node.c:78: warning: Function parameter or member 'hmem_attrs' not described in 'node_access_nodes' Copy an existing description from another function call. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21thermal: bcm2835: no need to check return value of debugfs_create functionsGreg Kroah-Hartman1-2/+0
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ray Jui <rjui@broadcom.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: bcm-kernel-feedback-list@broadcom.com Cc: linux-pm@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21power: avs: smartreflex: no need to check return value of debugfs_create ↵Greg Kroah-Hartman1-30/+11
functions When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. And even when not checking the return value, no need to cast away the call to (void), as these functions were never a "must check" type of a function, so remove that odd cast. Cc: Kevin Hilman <khilman@kernel.org> Cc: Nishanth Menon <nm@ti.com> Cc: linux-pm@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-216lowpan: no need to check return value of debugfs_create functionsGreg Kroah-Hartman3-89/+32
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Because we don't care if debugfs works or not, this trickles back a bit so we can clean things up by making some functions return void instead of an error value that is never going to fail. Cc: Alexander Aring <alex.aring@gmail.com> Cc: Jukka Rissanen <jukka.rissanen@linux.intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-bluetooth@vger.kernel.org Cc: linux-wpan@vger.kernel.org Cc: netdev@vger.kernel.org Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21watchdog: bcm_kona_wdt: no need to check return value of debugfs_create ↵Greg Kroah-Hartman1-10/+4
functions When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Wim Van Sebroeck <wim@linux-watchdog.org> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ray Jui <rjui@broadcom.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: bcm-kernel-feedback-list@broadcom.com Cc: linux-watchdog@vger.kernel.org Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21watchdog: mei_wdt: no need to check return value of debugfs_create functionsGreg Kroah-Hartman1-23/+7
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Wim Van Sebroeck <wim@linux-watchdog.org> Cc: linux-watchdog@vger.kernel.org Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21coresight: cpu-debug: no need to check return value of debugfs_create functionsGreg Kroah-Hartman1-13/+2
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: linux-arm-kernel@lists.infradead.org Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21btrfs: sysfs: Replace default_attrs in ktypes with groupsKimberly Brown1-3/+5
The kobj_type default_attrs field is being replaced by the default_groups field. Replace the default_attrs fields in btrfs_raid_ktype and space_info_ktype with default_groups. Change "raid_attributes" to "raid_attrs", and use the ATTRIBUTE_GROUPS macro to create raid_groups and space_info_groups. Signed-off-by: Kimberly Brown <kimbrownkd@gmail.com> Acked-by: David Sterba <dsterba@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19firmware: arm_scmi: Use the correct style for SPDX License IdentifierNishad Kamdar1-1/+1
This patch corrects the SPDX License Identifier style in header file related to Firmware Drivers for ARM SCMI Message Protocol. For C header files Documentation/process/license-rules.rst mandates C-like comments (opposed to C source files where C++ style should be used) Changes made by using a script provided by Joe Perches here: https://lkml.org/lkml/2019/2/7/46 Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19firmware: ti_sci: Use the correct style for SPDX License IdentifierNishad Kamdar1-1/+1
This patch corrects the SPDX License Identifier style in header file related to Firmware Drivers for Texas Instruments SCI Protocol. For C header files Documentation/process/license-rules.rst mandates C-like comments (opposed to C source files where C++ style should be used) Changes made by using a script provided by Joe Perches here: https://lkml.org/lkml/2019/2/7/46 Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19lib : kobject: fix refcount imblance on kobject_renameLin Yi1-1/+3
the kobj refcount increased by kobject_get should be released before error return, otherwise lead to a memory leak. Signed-off-by: Lin Yi <teroincn@163.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-18mei: no need to check return value of debugfs_create functionsGreg Kroah-Hartman3-48/+14
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-18genwq: no need to check return value of debugfs_create functionsGreg Kroah-Hartman4-146/+32
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Frank Haverkamp <haver@linux.ibm.com> Cc: linux-kernel@vger.kernel.org Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>