Don't use 0 as NULL pointer.
Spotted by sparse.
Signed-off-by: Adrian Bunk <[email protected]>
---
39d28b33b48bbec91bfbd0e761c2f1e3e1d08b88 diff --git a/drivers/char/n_hdlc.c b/drivers/char/n_hdlc.c
index 82bcfb9..9e6145a 100644
--- a/drivers/char/n_hdlc.c
+++ b/drivers/char/n_hdlc.c
@@ -501,7 +501,7 @@ static void n_hdlc_tty_receive(struct tty_struct *tty, const __u8 *data,
__FILE__,__LINE__, count);
/* This can happen if stuff comes in on the backup tty */
- if (n_hdlc == 0 || tty != n_hdlc->tty)
+ if (n_hdlc == NULL || tty != n_hdlc->tty)
return;
/* verify line is using HDLC discipline */