From 26eeefd5956449b03c87c49b996e012ffe3e59aa Mon Sep 17 00:00:00 2001 From: Emil Bartczak Date: Thu, 8 Dec 2016 00:27:39 +0100 Subject: [PATCH] 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 Signed-off-by: Alexandre Belloni --- drivers/rtc/rtc-mcp795.c | 4 ++-- 1 file 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", -- 2.20.1