Commit 870c2e7c authored by Minseong Kim's avatar Minseong Kim Committed by Dmitry Torokhov
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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: eef3e4ca ("Input: add driver for Synaptics I2C touchpad")
Signed-off-by: default avatarMinseong Kim <ii4gsp@gmail.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260121063738.799967-1-ii4gsp@gmail.com


Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 219be8d9

drivers/input/mouse/synaptics_i2c.c

+5 −2
Original line number Diff line number Diff line
@@ -615,11 +615,14 @@ 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;



	guard(mutex)(&input->mutex);

	if (input_device_enabled(input))

		mod_delayed_work(system_dfl_wq, &touch->dwork,

				 msecs_to_jiffies(NO_DATA_SLEEP_MSECS));