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Input: synaptics_i2c - guard polling restart in resume

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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: eef3e4cab7 ("Input: add driver for Synaptics I2C touchpad")
Signed-off-by: Minseong Kim <ii4gsp@gmail.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260121063738.799967-1-ii4gsp@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Minseong Kim
2026-01-21 10:02:02 -08:00
committed by Dmitry Torokhov
parent 219be8d98b
commit 870c2e7cd8
1 changed files with 5 additions and 2 deletions
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7
drivers/input/mouse/synaptics_i2c.c
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@@ -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;
}