kernel/linux.git/Documentation/ABI/stable, branch v6.12.80

mm, doc: update read_ahead_kb for MADV_HUGEPAGE

2024-11-15T06:43:48+00:00

MADV_HUGEPAGE is a new addition to readahead with behavior distinct from normal pages. To prevent confusion, we should update the documentation accordingly. Link: https://lkml.kernel.org/r/20241113150711.1685-1-laoar.shao@gmail.com Signed-off-by: Yafang Shao Cc: David Hildenbrand Cc: Matthew Wilcox Signed-off-by: Andrew Morton

Merge tag 'char-misc-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2024-09-26T17:13:08+00:00

Pull char / misc driver updates from Greg KH: "Here is the "big" set of char/misc and other driver subsystem changes for 6.12-rc1. Lots of changes in here, primarily dominated by the usual IIO driver updates and additions, but there are also small driver subsystem updates all over the place. Included in here are: - lots and lots of new IIO drivers and updates to existing ones - interconnect subsystem updates and new drivers - nvmem subsystem updates and new drivers - mhi driver updates - power supply subsystem updates - kobj_type const work for many different small subsystems - comedi driver fix - coresight subsystem and driver updates - fpga subsystem improvements - slimbus fixups - binder new feature addition for "frozen" notifications - lots and lots of other small driver updates and cleanups All of these have been in linux-next for a long time with no reported problems" * tag 'char-misc-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (354 commits) greybus: gb-beagleplay: Add firmware upload API arm64: dts: ti: k3-am625-beagleplay: Add bootloader-backdoor-gpios to cc1352p7 dt-bindings: net: ti,cc1352p7: Add bootloader-backdoor-gpios MAINTAINERS: Update path for U-Boot environment variables YAML nvmem: layouts: add U-Boot env layout comedi: ni_routing: tools: Check when the file could not be opened ocxl: Remove the unused declarations in headr file hpet: Fix the wrong format specifier uio: Constify struct kobj_type cxl: Constify struct kobj_type binder: modify the comment for binder_proc_unlock iio: adc: axp20x_adc: add support for AXP717 ADC dt-bindings: iio: adc: Add AXP717 compatible iio: adc: axp20x_adc: Add adc_en1 and adc_en2 to axp_data w1: ds2482: Drop explicit initialization of struct i2c_device_id::driver_data to 0 tools: iio: rm .*.cmd when make clean iio: adc: standardize on formatting for id match tables iio: proximity: aw96103: Add support for aw96103/aw96105 proximity sensor bus: mhi: host: pci_generic: Enable EDL trigger for Foxconn modems bus: mhi: host: pci_generic: Update EDL firmware path for Foxconn modems ...

nvmem: Fix misspelling

2024-09-03T10:13:23+00:00

There is no function called kstrbool(). Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Marek Vasut Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20240902142952.71639-9-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman

selftests: vDSO: fix the way vDSO functions are called for powerpc

2024-08-30T13:48:45+00:00

vdso_test_correctness test fails on powerpc: ~ # ./vdso_test_correctness ... [RUN] Testing clock_gettime for clock CLOCK_REALTIME_ALARM (8)... [FAIL] No such clock, but __vdso_clock_gettime returned 22 [RUN] Testing clock_gettime for clock CLOCK_BOOTTIME_ALARM (9)... [FAIL] No such clock, but __vdso_clock_gettime returned 22 [RUN] Testing clock_gettime for clock CLOCK_SGI_CYCLE (10)... [FAIL] No such clock, but __vdso_clock_gettime returned 22 ... [RUN] Testing clock_gettime for clock invalid (-1)... [FAIL] No such clock, but __vdso_clock_gettime returned 22 [RUN] Testing clock_gettime for clock invalid (-2147483648)... [FAIL] No such clock, but __vdso_clock_gettime returned 22 [RUN] Testing clock_gettime for clock invalid (2147483647)... [FAIL] No such clock, but __vdso_clock_gettime returned 22 On powerpc, a call to a VDSO function is not an ordinary C function call. Unlike several architectures which returns a negative error code in case of an error, powerpc sets CR[SO] and returns the error code as a positive value. Define and use a macro called VDSO_CALL() which takes a pointer to the function to call, the number of arguments and the arguments. Also update ABI vdso documentation to reflect this subtlety. Provide a specific version of VDSO_CALL() for powerpc that negates the error code on return when CR[SO] is set. Fixes: c7e5789b24d3 ("kselftest: Move test_vdso to the vDSO test suite") Fixes: 2e9a97256616 ("selftests: vdso: Add a selftest for vDSO getcpu()") Fixes: 693f5ca08ca0 ("kselftest: Extend vDSO selftest") Fixes: b2f1c3db2887 ("kselftest: Extend vdso correctness test to clock_gettime64") Fixes: 4920a2590e91 ("selftests/vDSO: add tests for vgetrandom") Signed-off-by: Christophe Leroy Acked-by: Shuah Khan Signed-off-by: Jason A. Donenfeld

Merge tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2024-07-19T22:55:08+00:00

Pull char / misc and other driver updates from Greg KH: "Here is the "big" set of char/misc and other driver subsystem changes for 6.11-rc1. Nothing major in here, just loads of new drivers and updates. Included in here are: - IIO api updates and new drivers added - wait_interruptable_timeout() api cleanups for some drivers - MODULE_DESCRIPTION() additions for loads of drivers - parport out-of-bounds fix - interconnect driver updates and additions - mhi driver updates and additions - w1 driver fixes - binder speedups and fixes - eeprom driver updates - coresight driver updates - counter driver update - new misc driver additions - other minor api updates All of these, EXCEPT for the final Kconfig build fix for 32bit systems, have been in linux-next for a while with no reported issues. The Kconfig fixup went in 29 hours ago, so might have missed the latest linux-next, but was acked by everyone involved" * tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (330 commits) misc: Kconfig: exclude mrvl-cn10k-dpi compilation for 32-bit systems misc: delete Makefile.rej binder: fix hang of unregistered readers misc: Kconfig: add a new dependency for MARVELL_CN10K_DPI virtio: add missing MODULE_DESCRIPTION() macro agp: uninorth: add missing MODULE_DESCRIPTION() macro spmi: add missing MODULE_DESCRIPTION() macros dev/parport: fix the array out-of-bounds risk samples: configfs: add missing MODULE_DESCRIPTION() macro misc: mrvl-cn10k-dpi: add Octeon CN10K DPI administrative driver misc: keba: Fix missing AUXILIARY_BUS dependency slimbus: Fix struct and documentation alignment in stream.c MAINTAINERS: CC dri-devel list on Qualcomm FastRPC patches misc: fastrpc: use coherent pool for untranslated Compute Banks misc: fastrpc: support complete DMA pool access to the DSP misc: fastrpc: add missing MODULE_DESCRIPTION() macro misc: fastrpc: Add missing dev_err newlines misc: fastrpc: Use memdup_user() nvmem: core: Implement force_ro sysfs attribute nvmem: Use sysfs_emit() for type attribute ...

Merge tag 'backlight-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

2024-07-18T00:48:40+00:00

Pull backlight updates from Lee Jones: "New Drivers: - Texas Instruments LM3509 Backlight Driver Fix-ups: - Device Tree binding adaptions/conversions/creation - Drop i2c_device_id::driver_data where the value is unused - Make use of the new *_scoped() guard APIs - Decouple from fbdev by providing Backlight with its own BACKLIGHT_POWER_* constrains Bug Fixes: - Correctly assess return values (NULL vs IS_ERR()) - Supply a bunch of MODULE_DESCRIPTIONs to silence modpost warnings" * tag 'backlight-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: (23 commits) backlight: sky81452-backlight: Use backlight power constants backlight: rave-sp-backlight: Use backlight power constants backlight: pwm-backlight: Use backlight power constants backlight: pcf50633-backlight: Use backlight power constants backlight: pandora-backlight: Use backlight power constants backlight: mp3309c: Use backlight power constants backlight: lm3533-backlight: Use backlight power constants backlight: led-backlight: Use backlight power constants backlight: ktd253-backlight: Use backlight power constants backlight: kb3886-bl: Use backlight power constants backlight: journada_bl: Use backlight power constants backlight: ipaq-micro-backlight: Use backlight power constants backlight: gpio-backlight: Use backlight power constants backlight: corgi-lcd: Use backlight power constants backlight: ams369fb06: Use backlight power constants backlight: aat2870-backlight: Use blacklight power constants backlight: Add BACKLIGHT_POWER_ constants for power states backlight: lm3509_bl: Fix early returns in for_each_child_of_node() backlight: Drop explicit initialization of struct i2c_device_id::driver_data to 0 backlight: Add missing MODULE_DESCRIPTION() macros ...

nvmem: core: Implement force_ro sysfs attribute

2024-07-05T07:55:05+00:00

Implement "force_ro" sysfs attribute to allow users to set read-write devices as read-only and back to read-write from userspace. The choice of the name is based on MMC core 'force_ro' attribute. This solves a situation where an AT24 I2C EEPROM with GPIO based nWP signal may have to be occasionally updated. Such I2C EEPROM device is usually set as read-only during most of the regular system operation, but in case it has to be updated in a controlled manner, it could be unlocked using this new "force_ro" sysfs attribute and then re-locked again. The "read-only" DT property and config->read_only configuration is respected and is used to set default state of the device, read-only or read-write, for devices which do implement .reg_write function. For devices which do not implement .reg_write function, the device is unconditionally read-only and the "force_ro" attribute is not visible. Signed-off-by: Marek Vasut Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20240705074852.423202-16-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman

nvmem: Document type attribute

2024-07-05T07:55:05+00:00

Document a type attribute used by userspace to discern different types of NVMEM devices. The implementation is already present, the ABI document is missing, add it. Reviewed-by: Alexandre Belloni Signed-off-by: Marek Vasut Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20240705074852.423202-14-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman

nvmem: Replace spaces with tab in documentation

2024-07-05T07:55:05+00:00

Replace two spaces with tab in the sysfs attribute documentation. No functional change. Signed-off-by: Marek Vasut Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20240705074852.423202-13-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman

backlight: Add BACKLIGHT_POWER_ constants for power states

2024-07-04T15:45:25+00:00

Duplicate FB_BLANK_ constants as BACKLIGHT_POWER__ constants in the backlight header file. Allows backlight drivers to avoid including the fbdev header file and removes a compile-time dependency between the two subsystems. The new BACKLIGHT_POWER_ constants have the same values as their FB_BLANK_ counterparts. Hence UAPI and internal semantics do not change. The backlight drivers can be converted one by one. Each instance of FB_BLANK_UNBLANK becomes BACKLIGHT_POWER_ON, each of FB_BLANK_POWERDOWN becomes BACKLIGHT_POWER_OFF, and FB_BLANK_NORMAL becomes BACKLIGHT_POWER_REDUCED. Backlight code or drivers do not use FB_BLANK_VSYNC_SUSPEND and FB_BLANK_HSYNC_SUSPEND, so no new constants for these are being added. The semantics of FB_BLANK_NORMAL appear inconsistent. In fbdev, NORMAL means display off with sync enabled. In backlight code, this translates to turn the backlight off, but some drivers interpret it as backlight on. So we keep the current code as is, but mark BACKLIGHT_POWER_REDUCED as deprecated. Drivers should be fixed and the constant removed. This affects ams369fg06 and a few DRM panel drivers. v2: - rename BL_CORE_ power constants to BACKLIGHT_POWER_ (Sam) - fix documentation Signed-off-by: Thomas Zimmermann Reviewed-by: Daniel Thompson Link: https://lore.kernel.org/r/20240624152033.25016-2-tzimmermann@suse.de Signed-off-by: Lee Jones