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rtc-m48t59: fix setting of a year on m48t08 and m48t02 rtcs 

Fix setting of a year in m48t08 and m48t02 clocks.
They do not have century bits and setting them
causes the year to overflow (bit 0x80 set).

Problem found by Robert Reif on Sun Sparcstation 20.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Krzysztof Helt 2008-09-07 18:25:20 -07:00 committed by David S. Miller
parent 3baca76f56
commit d875a4b0ff
1 changed files with 1 additions and 1 deletions
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2
drivers/rtc/rtc-m48t59.c
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@ -126,7 +126,7 @@ static int m48t59_rtc_set_time(struct device *dev, struct rtc_time *tm)
M48T59_WRITE((BIN2BCD(tm->tm_mon + 1) & 0x1F), M48T59_MONTH);
M48T59_WRITE(BIN2BCD(tm->tm_year % 100), M48T59_YEAR);
if (tm->tm_year/100)
if (pdata->type == M48T59RTC_TYPE_M48T59 && (tm->tm_year / 100))
val = (M48T59_WDAY_CEB | M48T59_WDAY_CB);
val |= (BIN2BCD(tm->tm_wday) & 0x07);
M48T59_WRITE(val, M48T59_WDAY);