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authorBaolin Wang <baolin.wang@linaro.org>2018-01-08 14:04:49 +0800
committerAlexandre Belloni <alexandre.belloni@bootlin.com>2018-03-17 14:20:54 +0100
commit4c4e5df1f346f70802bf4999de13d06dbbdf7a01 (patch)
treef86ee892ed68e5abc6d845a35fff813ba4c32bf3 /drivers/rtc/interface.c
parent71db049e7355f31604e2c04b6cabb71d02bd487d (diff)
downloadlinux-4c4e5df1f346f70802bf4999de13d06dbbdf7a01.tar.bz2
rtc: Factor out the RTC range validation into rtc_valid_range()
The RTC range validation code can be factored into rtc_valid_range() function to avoid duplicate code. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc/interface.c')
-rw-r--r--drivers/rtc/interface.c30
1 files changed, 18 insertions, 12 deletions
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index c068daebeec2..25aebc5b448d 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -23,6 +23,18 @@
static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer);
static void rtc_timer_remove(struct rtc_device *rtc, struct rtc_timer *timer);
+static int rtc_valid_range(struct rtc_device *rtc, struct rtc_time *tm)
+{
+ if (rtc->range_min != rtc->range_max) {
+ time64_t time = rtc_tm_to_time64(tm);
+
+ if (time < rtc->range_min || time > rtc->range_max)
+ return -ERANGE;
+ }
+
+ return 0;
+}
+
static int __rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm)
{
int err;
@@ -70,12 +82,9 @@ int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm)
if (err != 0)
return err;
- if (rtc->range_min != rtc->range_max) {
- time64_t time = rtc_tm_to_time64(tm);
-
- if (time < rtc->range_min || time > rtc->range_max)
- return -ERANGE;
- }
+ err = rtc_valid_range(rtc, tm);
+ if (err)
+ return err;
err = mutex_lock_interruptible(&rtc->ops_lock);
if (err)
@@ -381,12 +390,9 @@ int rtc_set_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
if (err != 0)
return err;
- if (rtc->range_min != rtc->range_max) {
- time64_t time = rtc_tm_to_time64(&alarm->time);
-
- if (time < rtc->range_min || time > rtc->range_max)
- return -ERANGE;
- }
+ err = rtc_valid_range(rtc, &alarm->time);
+ if (err)
+ return err;
err = mutex_lock_interruptible(&rtc->ops_lock);
if (err)