kernel/linux.git/drivers/input/mouse, branch v6.18.22

Input: bcm5974 - recover from failed mode switch

2026-04-11T12:26:39+00:00

commit fc1e8a6f129d87c64ac8e58b50d9dfa66217cfda upstream. Mode switches sent before control response are ignored. This results in an unresponsive trackpad and "bcm5974: bad trackpad package, length: 8" repeated in logs. On receiving unknown 8-byte packets, assume that mode switch was ignored and schedule an asynchronous mode reset. The reset will switch the device to normal mode, wait, then switch back to wellspring mode. Signed-off-by: Liam Mitchell Link: https://lore.kernel.org/linux-input/CAOQ1CL4+DP1TuLAGNsz5GdFBTHvnTg=5q=Dr2Z1OQc6RXydSYA@mail.gmail.com/ Acked-by: Henrik Rydberg Link: https://patch.msgid.link/20260213-bcm5974-reset-v2-1-1837851336b0@gmail.com Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman

Input: synaptics_i2c - guard polling restart in resume

2026-03-12T11:09:29+00:00

[ Upstream commit 870c2e7cd881d7a10abb91f2b38135622d9f9f65 ] synaptics_i2c_resume() restarts delayed work unconditionally, even when the input device is not opened. Guard the polling restart by taking the input device mutex and checking input_device_enabled() before re-queuing the delayed work. Fixes: eef3e4cab72ea ("Input: add driver for Synaptics I2C touchpad") Signed-off-by: Minseong Kim Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260121063738.799967-1-ii4gsp@gmail.com Signed-off-by: Dmitry Torokhov Signed-off-by: Sasha Levin

Input: synaptics_i2c - replace use of system_wq with system_dfl_wq

2026-03-12T11:09:29+00:00

[ Upstream commit b3ee88e27798f0e8dd3a81867804d693da74d57d ] Currently if a user enqueues a work item using schedule_delayed_work() the used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to schedule_work() that is using system_wq and queue_work(), that makes use again of WORK_CPU_UNBOUND. This lack of consistency cannot be addressed without refactoring the API. This patch continues the effort to refactor worqueue APIs, which has begun with the change introducing new workqueues and a new alloc_workqueue flag: commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq") commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag") This specific workload do not benefit from a per-cpu workqueue, so use the default unbound workqueue (system_dfl_wq) instead. Suggested-by: Tejun Heo Signed-off-by: Marco Crivellari Link: https://patch.msgid.link/20251106141955.218911-4-marco.crivellari@suse.com Signed-off-by: Dmitry Torokhov Stable-dep-of: 870c2e7cd881 ("Input: synaptics_i2c - guard polling restart in resume") Signed-off-by: Sasha Levin

Input: alps - fix use-after-free bugs caused by dev3_register_work

2026-01-02T11:56:56+00:00

commit bf40644ef8c8a288742fa45580897ed0e0289474 upstream. The dev3_register_work delayed work item is initialized within alps_reconnect() and scheduled upon receipt of the first bare PS/2 packet from an external PS/2 device connected to the ALPS touchpad. During device detachment, the original implementation calls flush_workqueue() in psmouse_disconnect() to ensure completion of dev3_register_work. However, the flush_workqueue() in psmouse_disconnect() only blocks and waits for work items that were already queued to the workqueue prior to its invocation. Any work items submitted after flush_workqueue() is called are not included in the set of tasks that the flush operation awaits. This means that after flush_workqueue() has finished executing, the dev3_register_work could still be scheduled. Although the psmouse state is set to PSMOUSE_CMD_MODE in psmouse_disconnect(), the scheduling of dev3_register_work remains unaffected. The race condition can occur as follows: CPU 0 (cleanup path) | CPU 1 (delayed work) psmouse_disconnect() | psmouse_set_state() | flush_workqueue() | alps_report_bare_ps2_packet() alps_disconnect() | psmouse_queue_work() kfree(priv); // FREE | alps_register_bare_ps2_mouse() | priv = container_of(work...); // USE | priv->dev3 // USE Add disable_delayed_work_sync() in alps_disconnect() to ensure that dev3_register_work is properly canceled and prevented from executing after the alps_data structure has been deallocated. This bug is identified by static analysis. Fixes: 04aae283ba6a ("Input: ALPS - do not mix trackstick and external PS/2 mouse data") Cc: stable@kernel.org Signed-off-by: Duoming Zhou Link: https://patch.msgid.link/b57b0a9ccca51a3f06be141bfc02b9ffe69d1845.1765939397.git.duoming@zju.edu.cn Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman

Merge tag 'input-for-v6.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2025-07-04T16:54:15+00:00

Pull input updates from Dmitry Torokhov: - support for Acer NGR 200 Controller added to xpad driver - xpad driver will no longer log errors about URBs at sudden disconnect - a fix for potential NULL dereference in cs40l50-vibra driver - several drivers have been switched to using scnprintf() to suppress warnings about potential output truncation * tag 'input-for-v6.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: cs40l50-vibra - fix potential NULL dereference in cs40l50_upload_owt() Input: alps - use scnprintf() to suppress truncation warning Input: iqs7222 - explicitly define number of external channels Input: xpad - support Acer NGR 200 Controller Input: xpad - return errors from xpad_try_sending_next_out_packet() up Input: xpad - adjust error handling for disconnect Input: apple_z2 - drop default ARCH_APPLE in Kconfig Input: Fully open-code compatible for grepping dt-bindings: HID: i2c-hid: elan: Introduce Elan eKTH8D18 Input: psmouse - switch to use scnprintf() to suppress truncation warning Input: lifebook - switch to use scnprintf() to suppress truncation warning Input: alps - switch to use scnprintf() to suppress truncation warning Input: atkbd - switch to use scnprintf() to suppress truncation warning Input: fsia6b - suppress buffer truncation warning for phys Input: iqs626a - replace snprintf() with scnprintf()

Input: alps - use scnprintf() to suppress truncation warning

2025-06-30T16:45:46+00:00

The commit 76c968e75715 ("Input: alps - switch to use scnprintf() to suppress truncation warning") converted one place in the driver while the other left untouched. Convert the other place as well. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20250630082245.1416796-1-andriy.shevchenko@linux.intel.com Signed-off-by: Dmitry Torokhov

treewide, timers: Rename from_timer() to timer_container_of()

2025-06-08T07:07:37+00:00

Move this API to the canonical timer_*() namespace. [ tglx: Redone against pre rc1 ] Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/aB2X0jCKQO56WdMt@gmail.com

Input: psmouse - switch to use scnprintf() to suppress truncation warning

2025-06-04T04:51:28+00:00

Switch the driver to use scnprintf() to avoid warnings about potential truncation of "phys" field which we can tolerate. Reported-by: Andy Shevchenko Signed-off-by: Dmitry Torokhov

Input: lifebook - switch to use scnprintf() to suppress truncation warning

2025-06-04T04:51:27+00:00

Switch the driver to use scnprintf() to avoid warnings about potential truncation of "phys" field which we can tolerate. Reported-by: Andy Shevchenko Signed-off-by: Dmitry Torokhov

Input: alps - switch to use scnprintf() to suppress truncation warning

2025-06-04T04:51:26+00:00

Switch the driver to use scnprintf() to avoid warnings about potential truncation of "phys" field which we can tolerate. Reported-by: Andy Shevchenko Signed-off-by: Dmitry Torokhov