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authorEmil Bartczak <emilbart@gmail.com>2016-12-08 00:27:39 +0100
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2016-12-19 00:59:23 +0100
commit26eeefd5956449b03c87c49b996e012ffe3e59aa (patch)
tree8ce99f7233d9143117e892e4f3a9316e19667985 /drivers/rtc
parente72765c648a172f052486cba9688ddc28f23140b (diff)
rtc: mcp795: fix time range difference between linux and RTC chip.
In linux rtc_time struct, tm_mon range is 0~11, while in RTC HW REG, month range is 1~12. This patch adjusts difference of them. Signed-off-by: Emil Bartczak <emilbart@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-mcp795.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/rtc/rtc-mcp795.c b/drivers/rtc/rtc-mcp795.c
index 5fbdb4c20a9b..4618f4fa655f 100644
--- a/drivers/rtc/rtc-mcp795.c
+++ b/drivers/rtc/rtc-mcp795.c
@@ -110,7 +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] & MCP795_LP_BIT) | bin2bcd(tim->tm_mon);
+ data[5] = (data[5] & MCP795_LP_BIT) | bin2bcd(tim->tm_mon + 1);
if (tim->tm_year > 100)
tim->tm_year -= 100;
@@ -143,7 +143,7 @@ static int mcp795_read_time(struct device *dev, struct rtc_time *tim)
tim->tm_min = bcd2bin(data[1] & 0x7F);
tim->tm_hour = bcd2bin(data[2] & 0x3F);
tim->tm_mday = bcd2bin(data[4] & 0x3F);
- tim->tm_mon = bcd2bin(data[5] & 0x1F);
+ tim->tm_mon = bcd2bin(data[5] & 0x1F) - 1;
tim->tm_year = bcd2bin(data[6]) + 100; /* Assume we are in 20xx */
dev_dbg(dev, "Read from mcp795: %04d-%02d-%02d %02d:%02d:%02d\n",