lkml.org 
[lkml]   [2019]   [Dec]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5/9] rtc: at91rm9200: avoid time readout in at91_rtc_setalarm
Date
The current rtc time is read out in at91_rtc_setalarm but it it immediately
overwritten by the alarm time. Remove the readout.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
drivers/rtc/rtc-at91rm9200.c | 20 ++++++--------------
1 file 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) {
--
2.23.0
\
 
 \ /
  Last update: 2019-12-29 21:45    [W:0.045 / U:3.776 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site