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2024-07-10pwm: Use guards for pwm_lookup_lock instead of explicity mutex_lock + ↵Uwe Kleine-König
mutex_unlock With the compiler caring for unlocking the mutex several functions can be simplified. Benefit from that. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/28807cb5d9dbce66860f74829c0f57cd9c01373e.1719520143.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: Use guards for export->lock instead of explicity mutex_lock + mutex_unlockUwe Kleine-König
With the compiler caring for unlocking the mutex several functions can be simplified. Benefit from that. There is just one caller left for mutex_lock(&export->lock). The code flow is too complicated there to convert it to the compiler assisted variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/210010f2e579a92476462726e18e0135f6854909.1719520143.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: Use guards for pwm_lock instead of explicity mutex_lock + mutex_unlockUwe Kleine-König
With the compiler caring for unlocking the mutex several functions can be simplified. Benefit from that. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/2102fe8189bdf1f02ff3785b551a69be27a65af4.1719520143.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: Register debugfs operations after the pwm classUwe Kleine-König
While the debugfs operations don't technically depend on an initialized class, they loop over the idr that only can get entries when the class is properly initialized. This also fixes the ugly (but harmless) corner case that the debugfs file stays around after the pwm class failed to initialize. While at it, add an appropriate error message when class initialization fails. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/20240626222529.2901200-2-u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: imx-tpm: Enable pinctrl setting for sleep stateShenwei Wang
Apply the pinctrl setting of sleep state when system enters suspend state. Restore to the default pinctrl setting when system resumes. Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com> Link: https://lore.kernel.org/r/20240702164514.11007-1-shenwei.wang@nxp.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: lpss: drop redundant runtime PM handlesRaag Jadav
We no longer need empty runtime PM handles for PCI devices after commits [1] and [2]. Drop them and let PCI core take care of power state transitions. [1] c5eb1190074c ("PCI / PM: Allow runtime PM without callback functions") [2] fa885b06ec7e ("PCI/PM: Allow runtime PM with no PM callbacks at all") Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Raag Jadav <raag.jadav@intel.com> Link: https://lore.kernel.org/r/20240605131533.20037-3-raag.jadav@intel.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: lpss: use devm_pm_runtime_enable() helperRaag Jadav
Use devm_pm_runtime_enable() helper to enable runtime PM and drop redundant platform ->remove() callback. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Raag Jadav <raag.jadav@intel.com> Link: https://lore.kernel.org/r/20240605131533.20037-2-raag.jadav@intel.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm-stm32: Make use of parametrised register definitionsUwe Kleine-König
There is no semantic change, but it is a nicer on the eyes of a reader, because TIM_CCR1 + 4 * ch encodes internal register knowledge, while TIM_CCRx(ch + 1) keeps that information completely in the header defining the registers. While I expected this to not result in any changes in the binary, gcc 13 (as provided by Debian in the gcc-13-arm-linux-gnueabihf 13.2.0-12cross1 package) compiles the new version with an allmodconfig to more compact code: $ source/scripts/bloat-o-meter drivers/pwm/pwm-stm32.o-pre drivers/pwm/pwm-stm32.o add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-488 (-488) Function old new delta stm32_pwm_get_state 968 936 -32 stm32_pwm_apply_locked 1920 1464 -456 Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/d7ef7a6158df4ba6687233b0e00d37796b069fb3.1718791090.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10Merge tag 'ib-mfd-counter-v5.11' of ↵Uwe Kleine-König
https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into HEAD Immutable branch between MFD and Counter due for the v5.11 merge window
2024-07-10dt-bindings: pwm: imx: remove interrupt property from requiredFrank Li
The driver "drivers/pwm/pwm-imx27.c" never use interrupt. Generally pwm hardware generate a waveform according to register timing setting. Needn't interrupt handle at all. So remove it from "required" list. Signed-off-by: Frank Li <Frank.Li@nxp.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240605220839.1398872-1-Frank.Li@nxp.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: meson: Add support for Amlogic S4 PWMJunyi Zhao
Add support for Amlogic S4 PWM. Signed-off-by: Junyi Zhao <junyi.zhao@amlogic.com> Signed-off-by: Kelvin Zhang <kelvin.zhang@amlogic.com> Reviewed-by: George Stark <gnstark@salutedevices.com> Link: https://lore.kernel.org/r/20240613-s4-pwm-v8-1-b5bd0a768282@amlogic.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: Add GPIO PWM driverVincent Whitchurch
Add a software PWM which toggles a GPIO from a high-resolution timer. This will naturally not be as accurate or as efficient as a hardware PWM, but it is useful in some cases. I have for example used it for evaluating LED brightness handling (via leds-pwm) on a board where the LED was just hooked up to a GPIO, and for a simple verification of the timer frequency on another platform. Since high-resolution timers are used, sleeping GPIO chips are not supported and are rejected in the probe function. Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com> Co-developed-by: Stefan Wahren <wahrenst@gmx.net> Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Co-developed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Andy Shevchenko <andy@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Dhruva Gole <d-gole@ti.com> Link: https://lore.kernel.org/r/20240604-pwm-gpio-v7-2-6b67cf60db92@linaro.org Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10dt-bindings: pwm: Add pwm-gpioNicola Di Lieto
Add bindings for PWM modulated by GPIO. Signed-off-by: Nicola Di Lieto <nicola.dilieto@gmail.com> Co-developed-by: Stefan Wahren <wahrenst@gmx.net> Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Dhruva Gole <d-gole@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20240604-pwm-gpio-v7-1-6b67cf60db92@linaro.org Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: Drop pwm_apply_state()Uwe Kleine-König
This function is not supposed to be used any more since commit c748a6d77c06 ("pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()") that is included in v6.8-rc1. Two kernel releases should be enough for everyone to adapt, so drop the old function that was introduced as a compatibility stub for the transition. Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10bus: ts-nbus: Use pwm_apply_might_sleep()Sean Young
pwm_apply_state() is deprecated since commit c748a6d77c06a ("pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()"). Signed-off-by: Sean Young <sean@mess.org> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/20240614090829.560605-1-sean@mess.org Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: Remove wrong implementation details from pwm_ops's documentationUwe Kleine-König
When .get_state() is called is an implementation detail that implementors and users shouldn't care about and rely on. Additionally it's wrong, because with PWM_DEBUG enabled it is called more often. Just drop the wrong statement. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/611ba758d7e9fb2695e96b23cb7ceeefb6ba8513.1717756902.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: Make pwm_request_from_chip() private to the coreUwe Kleine-König
The last user of this function outside of core.c is gone, so it can be made static. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://lore.kernel.org/r/20240607084416.897777-8-u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: cros-ec: Simplify device tree xlationUwe Kleine-König
The cros-ec device tree binding only uses #pwm-cells = <1>, and so there is no period provided in the device tree. Up to now this was handled by hardcoding the period to the only supported value in the custom xlate callback. Apart from that, the default xlate callback (i.e. of_pwm_xlate_with_flags()) handles this just fine (and better, e.g. by checking args->args_count >= 1 before accessing args->args[0]). To simplify make use of of_pwm_xlate_with_flags(), drop the custom callback and provide the default period in .probe() already. Apart from simplifying the driver this also drops the last non-core user of pwm_request_from_chip() and so makes further simplifications possible. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://lore.kernel.org/r/20240607084416.897777-7-u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: cros-ec: Don't care about consumers in .get_state()Uwe Kleine-König
The get_state() callback is never called (in a visible way) after there is a consumer for a pwm device. The core handles loosing the information about duty_cycle just fine. Simplify the driver accordingly. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://lore.kernel.org/r/20240607084416.897777-6-u.kleine-koenig@baylibre.com [Drop kdoc comment for channel to make W=1 builds happy] Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: Make use of a symbol namespace for the coreUwe Kleine-König
Define all pwm core's symbols in the namespace "PWM". The necessary module import statement is just added to the main header, this way every file that knows about the public functions automatically has this namespace available. Thanks to Biju Das for pointing out a cut'n'paste failure in my initial patch. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/20240607160012.1206874-2-u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: add missing MODULE_DESCRIPTION() macrosJeff Johnson
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pwm/pwm-imx1.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pwm/pwm-imx27.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pwm/pwm-intel-lgm.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pwm/pwm-mediatek.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pwm/pwm-pxa.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pwm/pwm-samsung.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pwm/pwm-spear.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pwm/pwm-visconti.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240610-md-drivers-pwm-v2-1-b337cfaa70ea@quicinc.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: axi-pwmgen: Make use of regmap_clear_bits()Uwe Kleine-König
Instead of using regmap_update_bits() and passing val=0, better use regmap_clear_bits(). Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Acked-by: Trevor Gamblin <tgamblin@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20240606164047.534741-6-u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: jz4740: Another few conversions to regmap_{set,clear}_bits()Uwe Kleine-König
Similar to commit 7d9199995412 ("pwm: jz4740: Use regmap_{set,clear}_bits") convert two more regmap_update_bits() calls to regmap_{set,clear}_bits() which were missed back then. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Reviewed-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20240606164047.534741-5-u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: Add driver for AXI PWM generatorDrew Fustini
Add support for the Analog Devices AXI PWM Generator. This device is an FPGA-implemented peripheral used as PWM signal generator and can be interfaced with AXI4. The register map of this peripheral makes it possible to configure the period and duty cycle of the output signal. Link: https://analogdevicesinc.github.io/hdl/library/axi_pwm_gen/index.html Co-developed-by: Sergiu Cuciurean <sergiu.cuciurean@analog.com> Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@analog.com> Co-developed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Drew Fustini <dfustini@baylibre.com> Acked-by: Nuno Sa <nuno.sa@analog.com> Co-developed-by: Trevor Gamblin <tgamblin@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Link: https://lore.kernel.org/r/20240605203507.1934434-3-tgamblin@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10dt-bindings: pwm: Add AXI PWM generatorDrew Fustini
Add Analog Devices AXI PWM generator. Link: https://analogdevicesinc.github.io/hdl/library/axi_pwm_gen/index.html Signed-off-by: Drew Fustini <dfustini@baylibre.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Acked-by: Michael Hennerich <michael.hennerich@analog.com> Acked-by: Nuno Sa <nuno.sa@analog.com> Co-developed-by: Trevor Gamblin <tgamblin@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Link: https://lore.kernel.org/r/20240605203507.1934434-2-tgamblin@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10dt-bindings: pwm: fsl-ftm: Convert to yaml formatFrank Li
Convert dt-bindings pwm-fsl-ftm.txt to yaml format. Additional change during convert: - "big-endian" is not required property. - Add "sleep" to pinctrl-names. - Change pinctrl-NNN to pinctrl-0 and pinctrl-1. - Remove label "pwm0" in example. Signed-off-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240528202025.2919358-1-Frank.Li@nxp.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10pwm: atmel-tcb: Fix race condition and convert to guardsUwe Kleine-König
The hardware only supports a single period length for both PWM outputs. So atmel_tcb_pwm_config() checks the configuration of the other output if it's compatible with the currently requested setting. The register values are then actually updated in atmel_tcb_pwm_enable(). To make this race free the lock must be held during the whole process, so grab the lock in .apply() instead of individually in atmel_tcb_pwm_disable() and atmel_tcb_pwm_enable() which then also covers atmel_tcb_pwm_config(). To simplify handling, use the guard helper to let the compiler care for unlocking. Otherwise unlocking would be more difficult as there is more than one exit path in atmel_tcb_pwm_apply(). Fixes: 9421bade0765 ("pwm: atmel: add Timer Counter Block PWM driver") Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Link: https://lore.kernel.org/r/20240709101806.52394-3-u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2024-07-10vfio/pci: Init the count variable in collecting hot-reset devicesYi Liu
The count variable is used without initialization, it results in mistakes in the device counting and crashes the userspace if the get hot reset info path is triggered. Fixes: f6944d4a0b87 ("vfio/pci: Collect hot-reset devices to local buffer") Link: https://bugzilla.kernel.org/show_bug.cgi?id=219010 Reported-by: Žilvinas Žaltiena <zaltys@natrix.lt> Cc: Beld Zhang <beldzhang@gmail.com> Signed-off-by: Yi Liu <yi.l.liu@intel.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20240710004150.319105-1-yi.l.liu@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2024-07-10platform/x86: toshiba_acpi: Fix array out-of-bounds accessArmin Wolf
In order to use toshiba_dmi_quirks[] together with the standard DMI matching functions, it must be terminated by a empty entry. Since this entry is missing, an array out-of-bounds access occurs every time the quirk list is processed. Fix this by adding the terminating empty entry. Reported-by: kernel test robot <oliver.sang@intel.com> Closes: https://lore.kernel.org/oe-lkp/202407091536.8b116b3d-lkp@intel.com Fixes: 3cb1f40dfdc3 ("drivers/platform: toshiba_acpi: Call HCI_PANEL_POWER_ON on resume on some models") Cc: stable@vger.kernel.org Signed-off-by: Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20240709143851.10097-1-W_Armin@gmx.de Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2024-07-10hwmon: (pmbus/ltc4286) Drop unused i2c device idsUwe Kleine-König
The driver doesn't make use of the different numbers assigned to the different devices. So drop them. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/9a48ba0368e0c8cddc94c5e4cf3edd7eadc03a2d.1720600141.git.u.kleine-koenig@baylibre.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2024-07-10bcachefs: Add missing bch2_trans_begin()Kent Overstreet
this fixes a 'transaction should be locked' error in backpointers fsck Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-07-10bcachefs: Fix missing error check in journal_entry_btree_keys_validate()Kent Overstreet
Closes: https://syzkaller.appspot.com/bug?extid=8996d8f176cf946ef641 Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-07-10bcachefs: Warn on attempting a move with no replicasKent Overstreet
Instead of popping an assert in bch2_write(), WARN and print out some debugging info. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-07-10bcachefs: bch2_data_update_to_text()Kent Overstreet
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-07-10bcachefs: Log mount failure error codeKent Overstreet
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-07-10bcachefs: Fix undefined behaviour in eytzinger1_first()Kent Overstreet
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-07-10bcachefs: Mark bch_inode_info as SLAB_ACCOUNTYouling Tang
After commit 230e9fc28604 ("slab: add SLAB_ACCOUNT flag"), we need to mark the inode cache as SLAB_ACCOUNT, similar to commit 5d097056c9a0 ("kmemcg: account for certain kmem allocations to memcg") Signed-off-by: Youling Tang <tangyouling@kylinos.cn> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-07-10bcachefs: Fix bch2_inode_insert() race path for tmpfilesKent Overstreet
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-07-10closures: fix closure_sync + closure debuggingKent Overstreet
originally, stack closures were only used synchronously, and with the original implementation of closure_sync() the ref never hit 0; thus, closure_put_after_sub() assumes that if the ref hits 0 it's on the debug list, in debug mode. that's no longer true with the current implementation of closure_sync, so we need a new magic so closure_debug_destroy() doesn't pop an assert. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-07-10bcachefs: Fix journal getting stuck on a flush commitKent Overstreet
silly race Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-07-10ARM: davinci: Convert comma to semicolonChen Ni
Replace a comma between expression statements by a semicolon. Fixes: efc1bb8a6fd5 ("davinci: add power management support") Signed-off-by: Chen Ni <nichen@iscas.ac.cn> Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2024-07-10gpio: mc33880: Convert comma to semicolonChen Ni
Replace a comma between expression statements by a semicolon. Fixes: 1e5db00687c1 ("gpio: add MC33880 driver") Signed-off-by: Chen Ni <nichen@iscas.ac.cn> Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Link: https://lore.kernel.org/r/20240710082813.2287329-1-nichen@iscas.ac.cn [Bartosz: fixed the Fixes: tag] Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-07-10gpio: virtuser: actually use the "trimmed" local variableBartosz Golaszewski
This variable is set with the intention of being passed to the subsequent strcmp() but something went wrong and it was left unused. Use it now. Fixes: 91581c4b3f29 ("gpio: virtuser: new virtual testing driver for the GPIO API") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202407092245.BPnW2mr6-lkp@intel.com/ Link: https://lore.kernel.org/r/20240709151235.90523-1-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-07-10perf: add missing MODULE_DESCRIPTION() macrosJeff Johnson
With ARCH=x86, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/perf/arm-ccn.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/perf/fsl_imx8_ddr_perf.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/perf/marvell_cn10k_ddr_pmu.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/perf/arm_cspmu/arm_cspmu_module.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/perf/arm_cspmu/nvidia_cspmu.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/perf/arm_cspmu/ampere_cspmu.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/perf/cxl_pmu.o Add the missing invocation of the MODULE_DESCRIPTION() macro to all files which have a MODULE_LICENSE(). This includes drivers/perf/hisilicon/hisi_uncore_pmu.c which, although it did not produce a warning with the x86 allmodconfig configuration, may cause this warning with arm64 configurations. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240709-md-drivers-perf-v3-1-513275b75ed0@quicinc.com Signed-off-by: Will Deacon <will@kernel.org>
2024-07-10libceph: fix race between delayed_work() and ceph_monc_stop()Ilya Dryomov
The way the delayed work is handled in ceph_monc_stop() is prone to races with mon_fault() and possibly also finish_hunting(). Both of these can requeue the delayed work which wouldn't be canceled by any of the following code in case that happens after cancel_delayed_work_sync() runs -- __close_session() doesn't mess with the delayed work in order to avoid interfering with the hunting interval logic. This part was missed in commit b5d91704f53e ("libceph: behave in mon_fault() if cur_mon < 0") and use-after-free can still ensue on monc and objects that hang off of it, with monc->auth and monc->monmap being particularly susceptible to quickly being reused. To fix this: - clear monc->cur_mon and monc->hunting as part of closing the session in ceph_monc_stop() - bail from delayed_work() if monc->cur_mon is cleared, similar to how it's done in mon_fault() and finish_hunting() (based on monc->hunting) - call cancel_delayed_work_sync() after the session is closed Cc: stable@vger.kernel.org Link: https://tracker.ceph.com/issues/66857 Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Xiubo Li <xiubli@redhat.com>
2024-07-10floppy: add missing MODULE_DESCRIPTION() macroJeff Johnson
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/block/floppy.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: Denis Efremov <efremov@linux.com> Link: https://lore.kernel.org/r/20240602-md-block-floppy-v1-1-bc628ea5eb84@quicinc.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-07-10loop: add missing MODULE_DESCRIPTION() macroJeff Johnson
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/block/loop.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240602-md-block-loop-v1-1-b9b7e2603e72@quicinc.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-07-10ublk_drv: add missing MODULE_DESCRIPTION() macroJeff Johnson
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/block/ublk_drv.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20240602-md-block-ublk_drv-v1-1-995474cafff0@quicinc.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-07-10xen/blkback: add missing MODULE_DESCRIPTION() macroJeff Johnson
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/block/xen-blkback/xen-blkback.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240602-md-block-xen-blkback-v1-1-6ff5b58bdee1@quicinc.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-07-10io_uring/napi: Remove unnecessary s64 castThorsten Blum
Since the do_div() macro casts the divisor to u32 anyway, remove the unnecessary s64 cast and fix the following Coccinelle/coccicheck warning reported by do_div.cocci: WARNING: do_div() does a 64-by-32 division, please consider using div64_s64 instead Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com> Link: https://lore.kernel.org/r/20240710010520.384009-2-thorsten.blum@toblux.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
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