Input: grip - fix crash when accessing device

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/drivers/input/joystick/grip.c b/drivers/input/joystick/grip.c
index a936e7aedb103552e617010d7260a74664c6ff29..330c6717c149724ada1bb407006c87cdb3e38b7b 100644 (file)
--- a/drivers/input/joystick/grip.c
+++ b/drivers/input/joystick/grip.c
@@ -192,6 +192,9 @@ static void grip_poll(struct gameport *gameport)
        for (i = 0; i < 2; i++) {
 
                dev = grip->dev[i];
+               if (!dev)
+                       continue;
+
                grip->reads++;
 
                switch (grip->mode[i]) {