Input: libps2 - warn instead of oopsing when passed bad arguments
This is more user-friendly and also fixes Coverity #id 249
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/serio/libps2.c b/drivers/input/serio/libps2.c
index 61a6f97..ed202f2 100644
--- a/drivers/input/serio/libps2.c
+++ b/drivers/input/serio/libps2.c
@@ -177,6 +177,11 @@
return -1;
}
+ if (send && !param) {
+ WARN_ON(1);
+ return -1;
+ }
+
mutex_lock_nested(&ps2dev->cmd_mutex, SINGLE_DEPTH_NESTING);
serio_pause_rx(ps2dev->serio);