--- zzzz-none-000/linux-3.10.107/drivers/input/serio/hp_sdc.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/input/serio/hp_sdc.c	2021-02-04 17:41:59.000000000 +0000
@@ -984,7 +984,7 @@
 	free_irq(hp_sdc.irq, &hp_sdc);
 	write_unlock_irq(&hp_sdc.lock);
 
-	del_timer(&hp_sdc.kicker);
+	del_timer_sync(&hp_sdc.kicker);
 
 	tasklet_kill(&hp_sdc.task);