Messages in this thread Patch in this message | | | From | Alexandre Belloni <> | Subject | [PATCH] rtc: pcf85063: remove useless century handling | Date | Wed, 24 Feb 2016 00:05:28 +0100 |
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pcf85063_get_datetime() tries to handle a century bit but that bit is not documented and the final value is never used anywhere else in the kernel.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> --- drivers/rtc/rtc-pcf85063.c | 6 ------ 1 file changed, 6 deletions(-)
diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c index c5db231f14de..2b3b99b094b5 100644 --- a/drivers/rtc/rtc-pcf85063.c +++ b/drivers/rtc/rtc-pcf85063.c @@ -31,13 +31,10 @@ #define PCF85063_REG_MO 0x09 #define PCF85063_REG_YR 0x0A -#define PCF85063_MO_C 0x80 /* century */ - static struct i2c_driver pcf85063_driver; struct pcf85063 { struct rtc_device *rtc; - int c_polarity; /* 0: MO_C=1 means 19xx, otherwise MO_C=1 means 20xx */ int voltage_low; /* indicates if a low_voltage was detected */ }; @@ -103,9 +100,6 @@ static int pcf85063_get_datetime(struct i2c_client *client, struct rtc_time *tm) tm->tm_year = bcd2bin(regs[6]); if (tm->tm_year < 70) tm->tm_year += 100; /* assume we are in 1970...2069 */ - /* detect the polarity heuristically. see note above. */ - pcf85063->c_polarity = (regs[5] & PCF85063_MO_C) ? - (tm->tm_year >= 100) : (tm->tm_year < 100); return rtc_valid_tm(tm); } -- 2.7.0
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