drivers/rtc/rtc-pcf8523.c: fix month definition

PCF8523 uses 1-12 to represent month according to datasheet.
link: www.nxp.com/documents/data_sheet/PCF8523.pdf.

Signed-off-by: Chris Cui <chris.wei.cui@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/rtc/rtc-pcf8523.c b/drivers/rtc/rtc-pcf8523.c
index 5c8f8226c848..4cdb64be061b 100644
--- a/drivers/rtc/rtc-pcf8523.c
+++ b/drivers/rtc/rtc-pcf8523.c
@@ -206,7 +206,7 @@ static int pcf8523_rtc_read_time(struct device *dev, struct rtc_time *tm)
         tm->tm_hour = bcd2bin(regs[2] & 0x3f);
         tm->tm_mday = bcd2bin(regs[3] & 0x3f);
         tm->tm_wday = regs[4] & 0x7;
-        tm->tm_mon = bcd2bin(regs[5] & 0x1f);
+        tm->tm_mon = bcd2bin(regs[5] & 0x1f) - 1;
         tm->tm_year = bcd2bin(regs[6]) + 100;
 
         return rtc_valid_tm(tm);
@@ -229,7 +229,7 @@ static int pcf8523_rtc_set_time(struct device *dev, struct rtc_time *tm)
         regs[3] = bin2bcd(tm->tm_hour);
         regs[4] = bin2bcd(tm->tm_mday);
         regs[5] = tm->tm_wday;
-        regs[6] = bin2bcd(tm->tm_mon);
+        regs[6] = bin2bcd(tm->tm_mon + 1);
         regs[7] = bin2bcd(tm->tm_year - 100);
 
         msg.addr = client->addr;