rtc: m41t80: return NULL rather than a plain 0 integer

Function m41t80_sqw_register_clk returns a pointer to struct clk,
so returning a plain 0 integer isn't good practice. Fix this by
returning a NULL instead.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20210925223441.182673-1-colin.king@canonical.com

diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index f736f8c22e963b39ab1db911c627dc7bef91a264..6d383b629d20a2e65a977468ca6ca36121ef4ece 100644 (file)
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -557,7 +557,7 @@ static struct clk *m41t80_sqw_register_clk(struct m41t80_data *m41t80)
                 * registered automatically when being referenced.
                 */
                of_node_put(fixed_clock);
-               return 0;
+               return NULL;
        }
 
        /* First disable the clock */