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| author | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-12-29 23:44:17 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2020-01-15 17:11:08 +0300 |
| commit | 565205d5adc196dcb34789c36e705d3220f02892 (patch) | |
| tree | 7b087a0d9ee6d97253cc25e01808f03e74098f60 /drivers/rtc/rtc-at91rm9200.c | |
| parent | a1243b099e257f8d977b19e503c3a0d0e70fbb84 (diff) | |
| download | linux-565205d5adc196dcb34789c36e705d3220f02892.tar.xz | |
rtc: at91rm9200: avoid time readout in at91_rtc_setalarm
The current rtc time is read out in at91_rtc_setalarm but it it immediately
overwritten by the alarm time. Remove the readout.
Link: https://lore.kernel.org/r/20191229204421.337612-5-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc/rtc-at91rm9200.c')
| -rw-r--r-- | drivers/rtc/rtc-at91rm9200.c | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c index 997734ed9a5b..30b77e0f39ef 100644 --- a/drivers/rtc/rtc-at91rm9200.c +++ b/drivers/rtc/rtc-at91rm9200.c @@ -255,25 +255,17 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm) */ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) { - struct rtc_time tm; - - at91_rtc_decodetime(AT91_RTC_TIMR, AT91_RTC_CALR, &tm); - - tm.tm_mon = alrm->time.tm_mon; - tm.tm_mday = alrm->time.tm_mday; - tm.tm_hour = alrm->time.tm_hour; - tm.tm_min = alrm->time.tm_min; - tm.tm_sec = alrm->time.tm_sec; + struct rtc_time tm = alrm->time; at91_rtc_write_idr(AT91_RTC_ALARM); at91_rtc_write(AT91_RTC_TIMALR, - bin2bcd(tm.tm_sec) << 0 - | bin2bcd(tm.tm_min) << 8 - | bin2bcd(tm.tm_hour) << 16 + bin2bcd(alrm->time.tm_sec) << 0 + | bin2bcd(alrm->time.tm_min) << 8 + | bin2bcd(alrm->time.tm_hour) << 16 | AT91_RTC_HOUREN | AT91_RTC_MINEN | AT91_RTC_SECEN); at91_rtc_write(AT91_RTC_CALALR, - bin2bcd(tm.tm_mon + 1) << 16 /* tm_mon starts at zero */ - | bin2bcd(tm.tm_mday) << 24 + bin2bcd(alrm->time.tm_mon + 1) << 16 /* tm_mon starts at zero */ + | bin2bcd(alrm->time.tm_mday) << 24 | AT91_RTC_DATEEN | AT91_RTC_MTHEN); if (alrm->enabled) { |