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| author |   Tony Prisk <linux@prisktech.co.nz> | 2013-01-04 15:35:48 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2013-01-04 16:11:48 -0800 |
| commit | 2f90b68309683f2c5765a1b04ca23d71e51f1494 (patch) | |
| tree | 3054c10b47a02c1c6229a83a32c0b41a698cfda5 /drivers/rtc | |
| parent | drivers/rtc/rtc-vt8500.c: correct handling of CR_24H bitfield (diff) | |
| download | linux-dev-2f90b68309683f2c5765a1b04ca23d71e51f1494.tar.xz linux-dev-2f90b68309683f2c5765a1b04ca23d71e51f1494.zip | |
drivers/rtc/rtc-vt8500.c: fix handling of data passed in struct rtc_time
tm_mon is 0..11, whereas vt8500 expects 1..12 for the month field,
causing invalid date errors for January, and causing the day field to
roll over incorrectly.
The century flag is only handled in vt8500_rtc_read_time, but not set in
vt8500_rtc_set_time. This patch corrects the behaviour of the century
flag.
Signed-off-by: Edgar Toernig <froese@gmx.de>
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-vt8500.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/rtc/rtc-vt8500.c b/drivers/rtc/rtc-vt8500.c index 737addff7663..00c930f4b6f3 100644 --- a/drivers/rtc/rtc-vt8500.c +++ b/drivers/rtc/rtc-vt8500.c @@ -119,7 +119,7 @@ static int vt8500_rtc_read_time(struct device *dev, struct rtc_time *tm) tm->tm_min = bcd2bin((time & TIME_MIN_MASK) >> TIME_MIN_S); tm->tm_hour = bcd2bin((time & TIME_HOUR_MASK) >> TIME_HOUR_S); tm->tm_mday = bcd2bin(date & DATE_DAY_MASK); - tm->tm_mon = bcd2bin((date & DATE_MONTH_MASK) >> DATE_MONTH_S); + tm->tm_mon = bcd2bin((date & DATE_MONTH_MASK) >> DATE_MONTH_S) - 1; tm->tm_year = bcd2bin((date & DATE_YEAR_MASK) >> DATE_YEAR_S) + ((date >> DATE_CENTURY_S) & 1 ? 200 : 100); tm->tm_wday = (time & TIME_DOW_MASK) >> TIME_DOW_S; @@ -138,8 +138,9 @@ static int vt8500_rtc_set_time(struct device *dev, struct rtc_time *tm) } writel((bin2bcd(tm->tm_year - 100) << DATE_YEAR_S) - | (bin2bcd(tm->tm_mon) << DATE_MONTH_S) - | (bin2bcd(tm->tm_mday)), + | (bin2bcd(tm->tm_mon + 1) << DATE_MONTH_S) + | (bin2bcd(tm->tm_mday)) + | ((tm->tm_year >= 200) << DATE_CENTURY_S), vt8500_rtc->regbase + VT8500_RTC_DS); writel((bin2bcd(tm->tm_wday) << TIME_DOW_S) | (bin2bcd(tm->tm_hour) << TIME_HOUR_S) |