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| author | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2016-02-24 00:05:28 +0100 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2016-03-14 17:08:26 +0100 |
| commit | ba270bbbf43474fe459e206b5283996fd1511647 (patch) | |
| tree | 6f0ab30fed866ee6fad276e7e23cfbf9f23eac74 /drivers/rtc | |
| parent | a25f4a95ec3cded34c1250364eba704c5e4fdac4 (diff) | |
| download | linux-stable-ba270bbbf43474fe459e206b5283996fd1511647.tar.gz linux-stable-ba270bbbf43474fe459e206b5283996fd1511647.tar.bz2 linux-stable-ba270bbbf43474fe459e206b5283996fd1511647.zip | |
rtc: pcf85063: remove useless century handling
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.
Reviewed-by: Juergen Borleis <jbe@pengutronix.de>
Tested-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-pcf85063.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c index c5db231f14de..4e940cc3d782 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 */ }; @@ -72,7 +69,6 @@ static int pcf85063_stop_clock(struct i2c_client *client, u8 *ctrl1) static int pcf85063_get_datetime(struct i2c_client *client, struct rtc_time *tm) { int rc; - struct pcf85063 *pcf85063 = i2c_get_clientdata(client); u8 regs[7]; /* @@ -103,9 +99,6 @@ 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); } |