drivers/rtc/rtc-nuc900.c: use NULL instead of 0

check_rtc_access_enable() returns pointer, thus NULL should be used
instead of 0 in order to fix the following sparse warning:

  drivers/rtc/rtc-nuc900.c:102:16: warning: Using plain integer as NULL pointer

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/rtc/rtc-nuc900.c b/drivers/rtc/rtc-nuc900.c
index 22861c5e0c596fff3c87182b1beb1f1c9cdaf109..248653c74b8010e0d942947c4cfddd9549379880 100644 (file)
--- a/drivers/rtc/rtc-nuc900.c
+++ b/drivers/rtc/rtc-nuc900.c
@@ -99,7 +99,7 @@ static int *check_rtc_access_enable(struct nuc900_rtc *nuc900_rtc)
        if (!timeout)
                return ERR_PTR(-EPERM);
 
-       return 0;
+       return NULL;
 }
 
 static int nuc900_rtc_bcd2bin(unsigned int timereg,