[PATCH 4.9 008/222] Input: synaptics-rmi4 - destroy F54 poller workqueue when removing

From: Greg Kroah-Hartman
Date: Fri Nov 22 2019 - 05:39:49 EST

From: Chuhong Yuan <hslester96@xxxxxxxxx>

commit ba60cf9f78f0d7c8e73c7390608f7f818ee68aa0 upstream.

The driver forgets to destroy workqueue in remove() similarly to what is
done when probe() fails. Add a call to destroy_workqueue() to fix it.

Since unregistration will wait for the work to finish, we do not need to
cancel/flush the work instance in remove().

Signed-off-by: Chuhong Yuan <hslester96@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20191114023405.31477-1-hslester96@xxxxxxxxx
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

drivers/input/rmi4/rmi_f54.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/input/rmi4/rmi_f54.c
+++ b/drivers/input/rmi4/rmi_f54.c
@@ -744,6 +744,7 @@ static void rmi_f54_remove(struct rmi_fu

+ destroy_workqueue(f54->workqueue);

struct rmi_function_handler rmi_f54_handler = {