HID: picoLCD: fix a NULL test in picolcd_raw_cir()

Smatch complains that the NULL checking in this function is not
consistent and could lead to a NULL dereference.  The comments say that
we should return here if rc_dev is NULL so I've changed the test to
match the comment.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-picolcd_cir.c b/drivers/hid/hid-picolcd_cir.c
index 14c5ce0..13ca919 100644 (file)
--- a/drivers/hid/hid-picolcd_cir.c
+++ b/drivers/hid/hid-picolcd_cir.c
@@ -51,7 +51,7 @@ int picolcd_raw_cir(struct picolcd_data *data,
 
        /* ignore if rc_dev is NULL or status is shunned */
        spin_lock_irqsave(&data->lock, flags);
-       if (data->rc_dev && (data->status & PICOLCD_CIR_SHUN)) {
+       if (!data->rc_dev || (data->status & PICOLCD_CIR_SHUN)) {
                spin_unlock_irqrestore(&data->lock, flags);
                return 1;
        }