From: Minseong Kim Date: Wed, 21 Jan 2026 18:02:02 +0000 (-0800) Subject: Input: synaptics_i2c - guard polling restart in resume X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=870c2e7cd881d7a10abb91f2b38135622d9f9f65;p=thirdparty%2Fkernel%2Flinux.git Input: synaptics_i2c - guard polling restart in resume 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 --- diff --git a/drivers/input/mouse/synaptics_i2c.c b/drivers/input/mouse/synaptics_i2c.c index c8ddfff2605f..29da66af36d7 100644 --- a/drivers/input/mouse/synaptics_i2c.c +++ b/drivers/input/mouse/synaptics_i2c.c @@ -615,13 +615,16 @@ static int synaptics_i2c_resume(struct device *dev) int ret; struct i2c_client *client = to_i2c_client(dev); struct synaptics_i2c *touch = i2c_get_clientdata(client); + struct input_dev *input = touch->input; ret = synaptics_i2c_reset_config(client); if (ret) return ret; - mod_delayed_work(system_dfl_wq, &touch->dwork, - msecs_to_jiffies(NO_DATA_SLEEP_MSECS)); + guard(mutex)(&input->mutex); + if (input_device_enabled(input)) + mod_delayed_work(system_dfl_wq, &touch->dwork, + msecs_to_jiffies(NO_DATA_SLEEP_MSECS)); return 0; }