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rtc: fsl-ftm-alarm: avoid struct rtc_time conversions

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Directly call ktime_get_real_seconds instead of converting the result to a
struct rtc_time and then back to a time64_t.

Link: https://lore.kernel.org/r/20191016201223.30568-4-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni
2019-10-16 22:12:23 +02:00
parent 9323e9631c
commit bb451661db
1 changed files with 2 additions and 5 deletions
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7
drivers/rtc/rtc-fsl-ftm-alarm.c
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@@ -203,17 +203,14 @@ static int ftm_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
*/ */
static int ftm_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) static int ftm_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
{ {
struct rtc_time tm; time64_t alm_time;
time64_t now, alm_time;
unsigned long long cycle; unsigned long long cycle;
struct ftm_rtc *rtc = dev_get_drvdata(dev); struct ftm_rtc *rtc = dev_get_drvdata(dev);
ftm_rtc_read_time(dev, &tm);
now = rtc_tm_to_time64(&tm);
alm_time = rtc_tm_to_time64(&alm->time); alm_time = rtc_tm_to_time64(&alm->time);
ftm_clean_alarm(rtc); ftm_clean_alarm(rtc);
cycle = (alm_time - now) * rtc->alarm_freq; cycle = (alm_time - ktime_get_real_seconds()) * rtc->alarm_freq;
if (cycle > MAX_COUNT_VAL) { if (cycle > MAX_COUNT_VAL) {
pr_err("Out of alarm range {0~262} seconds.\n"); pr_err("Out of alarm range {0~262} seconds.\n");
return -ERANGE; return -ERANGE;