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Input: libps2 - warn instead of oopsing when passed bad arguments
[firefly-linux-kernel-4.4.55.git]
/
drivers
/
input
/
serio
/
libps2.c
diff --git
a/drivers/input/serio/libps2.c
b/drivers/input/serio/libps2.c
index 61a6f977846f3fe999ebddd5d58a839e8dac5472..ed202f2f251aa76eeb3b680186a7baa7ddefaa7a 100644
(file)
--- a/
drivers/input/serio/libps2.c
+++ b/
drivers/input/serio/libps2.c
@@
-177,6
+177,11
@@
int ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command)
return -1;
}
return -1;
}
+ if (send && !param) {
+ WARN_ON(1);
+ return -1;
+ }
+
mutex_lock_nested(&ps2dev->cmd_mutex, SINGLE_DEPTH_NESTING);
serio_pause_rx(ps2dev->serio);
mutex_lock_nested(&ps2dev->cmd_mutex, SINGLE_DEPTH_NESTING);
serio_pause_rx(ps2dev->serio);