kernel/linux.git/drivers/w1, branch v6.19.11

w1: fix redundant counter decrement in w1_attach_slave_device()

2025-12-28T10:52:10+00:00

In w1_attach_slave_device(), if __w1_attach_slave_device() fails, put_device() -> w1_slave_release() is called to do the cleanup job. In w1_slave_release(), sl->family->refcnt and sl->master->slave_count have already been decremented. There is no need to decrement twice in w1_attach_slave_device(). Fixes: 2c927c0c73fd ("w1: Fix slave count on 1-Wire bus (resend)") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li Link: https://patch.msgid.link/20251218111414.564403-1-lihaoxiang@isrc.iscas.ac.cn Signed-off-by: Krzysztof Kozlowski

w1: therm: Fix off-by-one buffer overflow in alarms_store

2025-12-18T16:01:42+00:00

The sysfs buffer passed to alarms_store() is allocated with 'size + 1' bytes and a NUL terminator is appended. However, the 'size' argument does not account for this extra byte. The original code then allocated 'size' bytes and used strcpy() to copy 'buf', which always writes one byte past the allocated buffer since strcpy() copies until the NUL terminator at index 'size'. Fix this by parsing the 'buf' parameter directly using simple_strtoll() without allocating any intermediate memory or string copying. This removes the overflow while simplifying the code. Cc: stable@vger.kernel.org Fixes: e2c94d6f5720 ("w1_therm: adding alarm sysfs entry") Signed-off-by: Thorsten Blum Link: https://patch.msgid.link/20251216145007.44328-2-thorsten.blum@linux.dev Signed-off-by: Krzysztof Kozlowski

w1: omap-hdq: Remove redundant pm_runtime_mark_last_busy() calls

2025-11-11T09:55:18+00:00

pm_runtime_put_autosuspend(), pm_runtime_put_sync_autosuspend(), pm_runtime_autosuspend() and pm_request_autosuspend() now include a call to pm_runtime_mark_last_busy(). Remove the now-reduntant explicit call to pm_runtime_mark_last_busy(). Signed-off-by: Sakari Ailus Link: https://patch.msgid.link/20251111094302.95003-1-sakari.ailus@linux.intel.com Signed-off-by: Krzysztof Kozlowski

w1: ds28e17: Replace deprecated strcpy + strcat in w1_f19_add_slave

2025-10-13T00:19:03+00:00

strcpy() is deprecated and using strcat() is discouraged. Replace them with scnprintf(). No functional changes. Link: https://github.com/KSPP/linux/issues/88 Signed-off-by: Thorsten Blum Signed-off-by: Krzysztof Kozlowski

w1: use sysfs_emit() in sysfs show() callbacks

2025-10-13T00:19:03+00:00

Replace sprintf in sysfs show() paths with sysfs_emit(), per Documentation/filesystems/sysfs.rst. Signed-off-by: Vivek BalachandharTN Signed-off-by: Krzysztof Kozlowski

w1: matrox: Remove some deadcode in matrox_w1_remove()

2025-08-31T12:14:07+00:00

The .remove function can only be called if the .probe() succeeds. So there is no need to keep track of a successful probe in 'found'. Simplify code accordingly. Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/458641ad2d7a7adf30a03e70038304f0e6a81ff4.1755770484.git.christophe.jaillet@wanadoo.fr Signed-off-by: Krzysztof Kozlowski

sysfs: treewide: switch back to attribute_group::bin_attrs

2025-06-17T08:44:15+00:00

The normal bin_attrs field can now handle const pointers. This makes the _new variant unnecessary. Switch all users back. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20250530-sysfs-const-bin_attr-final-v3-4-724bfcf05b99@weissschuh.net Signed-off-by: Greg Kroah-Hartman

sysfs: treewide: switch back to bin_attribute::read()/write()

2025-06-17T08:44:13+00:00

The bin_attribute argument of bin_attribute::read() is now const. This makes the _new() callbacks unnecessary. Switch all users back. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20250530-sysfs-const-bin_attr-final-v3-3-724bfcf05b99@weissschuh.net Signed-off-by: Greg Kroah-Hartman

Merge tag 'char-misc-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2025-06-06T18:50:47+00:00

Pull char / misc / iio driver updates from Greg KH: "Here is the big char/misc/iio and other small driver subsystem pull request for 6.16-rc1. Overall, a lot of individual changes, but nothing major, just the normal constant forward progress of new device support and cleanups to existing subsystems. Highlights in here are: - Large IIO driver updates and additions and device tree changes - Android binder bugfixes and logfile fixes - mhi driver updates - comedi driver updates - counter driver updates and additions - coresight driver updates and additions - echo driver removal as there are no in-kernel users of it - nvmem driver updates - spmi driver updates - new amd-sbi driver "subsystem" and drivers added - rust miscdriver binding documentation fix - other small driver fixes and updates (uio, w1, acrn, hpet, xillybus, cardreader drivers, fastrpc and others) All of these have been in linux-next for quite a while with no reported problems" * tag 'char-misc-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (390 commits) binder: fix yet another UAF in binder_devices counter: microchip-tcb-capture: Add watch validation support dt-bindings: iio: adc: Add ROHM BD79100G iio: adc: add support for Nuvoton NCT7201 dt-bindings: iio: adc: add NCT7201 ADCs iio: chemical: Add driver for SEN0322 dt-bindings: trivial-devices: Document SEN0322 iio: adc: ad7768-1: reorganize driver headers iio: bmp280: zero-init buffer iio: ssp_sensors: optimalize -> optimize HID: sensor-hub: Fix typo and improve documentation iio: admv1013: replace redundant ternary operator with just len iio: chemical: mhz19b: Fix error code in probe() iio: adc: at91-sama5d2: use IIO_DECLARE_BUFFER_WITH_TS iio: accel: sca3300: use IIO_DECLARE_BUFFER_WITH_TS iio: adc: ad7380: use IIO_DECLARE_DMA_BUFFER_WITH_TS iio: adc: ad4695: rename AD4695_MAX_VIN_CHANNELS iio: adc: ad4695: use IIO_DECLARE_DMA_BUFFER_WITH_TS iio: introduce IIO_DECLARE_BUFFER_WITH_TS macros iio: make IIO_DMA_MINALIGN minimum of 8 bytes ...

w1: Avoid -Wflex-array-member-not-at-end warnings

2025-05-21T12:14:35+00:00

-Wflex-array-member-not-at-end was introduced in GCC-14, and we are getting ready to enable it, globally. Use the `DEFINE_RAW_FLEX()` helper for on-stack definitions of a flexible structure where the size of the flexible-array member is known at compile-time, and refactor the rest of the code, accordingly. So, with these changes, fix the following warnings: drivers/w1/w1_netlink.c:198:31: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] drivers/w1/w1_netlink.c:219:31: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] Reviewed-by: Kees Cook Signed-off-by: "Gustavo A. R. Silva" Link: https://lore.kernel.org/r/Z_RflBe5iDGTMFjV@kspp Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20250513105326.27385-2-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman