[PATCH 4.19 020/422] Input: synaptics-rmi4 - destroy F54 poller workqueue when removing

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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
@@ -742,6 +742,7 @@ static void rmi_f54_remove(struct rmi_fu
 
 	video_unregister_device(&f54->vdev);
 	v4l2_device_unregister(&f54->v4l2);
+	destroy_workqueue(f54->workqueue);
 }
 
 struct rmi_function_handler rmi_f54_handler = {





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