rtc: mcp795: fix bitmask value for leap year (LP).

According the datasheet the leap year is a fifth bit in month register.

Signed-off-by: Emil Bartczak <emilbart@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/rtc/rtc-mcp795.c b/drivers/rtc/rtc-mcp795.c
index 0389ee03c660..5fbdb4c20a9b 100644
--- a/drivers/rtc/rtc-mcp795.c
+++ b/drivers/rtc/rtc-mcp795.c
@@ -40,6 +40,7 @@
 
 #define MCP795_ST_BIT   0x80
 #define MCP795_24_BIT   0x40
+#define MCP795_LP_BIT   BIT(5)
 
 static int mcp795_rtcc_read(struct device *dev, u8 addr, u8 *buf, u8 count)
 {
@@ -109,7 +110,7 @@ static int mcp795_set_time(struct device *dev, struct rtc_time *tim)
         data[1] = (data[1] & 0x80) | bin2bcd(tim->tm_min);
         data[2] = bin2bcd(tim->tm_hour);
         data[4] = bin2bcd(tim->tm_mday);
-        data[5] = (data[5] & 0x10) | bin2bcd(tim->tm_mon);
+        data[5] = (data[5] & MCP795_LP_BIT) | bin2bcd(tim->tm_mon);
 
         if (tim->tm_year > 100)
                 tim->tm_year -= 100;