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[PATCH] rtc driver rtc-pcf8563 century bit inversed

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The century bit PCF8563_MO_C in the month register is misinterpreted.  It
is set to 1 for the 20th century and 0 for 21th, and the driver is
expecting the opposite behavior.

Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jean-Baptiste Maneyrol 2006-09-30 23:28:12 -07:00 committed by Linus Torvalds
parent 365e02237b
commit 1713e903c6
1 changed files with 2 additions and 2 deletions
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4
drivers/rtc/rtc-pcf8563.c
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@ -95,7 +95,7 @@ static int pcf8563_get_datetime(struct i2c_client *client, struct rtc_time *tm)
tm->tm_wday = buf[PCF8563_REG_DW] & 0x07;
tm->tm_mon = BCD2BIN(buf[PCF8563_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */
tm->tm_year = BCD2BIN(buf[PCF8563_REG_YR])
+ (buf[PCF8563_REG_MO] & PCF8563_MO_C ? 100 : 0);
+ (buf[PCF8563_REG_MO] & PCF8563_MO_C ? 0 : 100);
dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
"mday=%d, mon=%d, year=%d, wday=%d\n",
@ -135,7 +135,7 @@ static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm)
/* year and century */
buf[PCF8563_REG_YR] = BIN2BCD(tm->tm_year % 100);
if (tm->tm_year / 100)
if (tm->tm_year < 100)
buf[PCF8563_REG_MO] |= PCF8563_MO_C;
buf[PCF8563_REG_DW] = tm->tm_wday & 0x07;