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| author | Hyogi Gim <hyogi.gim@lge.com> | 2015-05-14 01:01:59 +0000 |
|---|---|---|
| committer | Johannes Weiner <hannes@cmpxchg.org> | 2015-05-14 01:01:59 +0000 |
| commit | 381d486dc40979490409e2d91cf87ef5eb5546ec (patch) | |
| tree | 40e93e38f9a0d3a20fff65ceb0e18cc66e77c203 | |
| parent | b2183a19e936e307c8e35bb763334f818b1c07fe (diff) | |
| download | mm-next-381d486dc40979490409e2d91cf87ef5eb5546ec.tar.gz | |
drivers/rtc/interface.c: check the error after __rtc_read_time()
Add the verification code for returned __rtc_read_time() error in
rtc_update_irq_enable() and rtc_timer_do_work().
Signed-off-by: Hyogi Gim <hyogi.gim@lge.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | drivers/rtc/interface.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 166fc60d8b551f..96268fc113373e 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -494,7 +494,10 @@ int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled) struct rtc_time tm; ktime_t now, onesec; - __rtc_read_time(rtc, &tm); + err = __rtc_read_time(rtc, &tm); + if (err < 0) + goto out; + onesec = ktime_set(1, 0); now = rtc_tm_to_ktime(tm); rtc->uie_rtctimer.node.expires = ktime_add(now, onesec); @@ -872,13 +875,17 @@ void rtc_timer_do_work(struct work_struct *work) struct timerqueue_node *next; ktime_t now; struct rtc_time tm; + int err = 0; struct rtc_device *rtc = container_of(work, struct rtc_device, irqwork); mutex_lock(&rtc->ops_lock); again: - __rtc_read_time(rtc, &tm); + err = __rtc_read_time(rtc, &tm); + if (err < 0) + goto out; + now = rtc_tm_to_ktime(tm); while ((next = timerqueue_getnext(&rtc->timerqueue))) { if (next->expires.tv64 > now.tv64) @@ -903,7 +910,6 @@ again: /* Set next alarm */ if (next) { struct rtc_wkalrm alarm; - int err; int retry = 3; alarm.time = rtc_ktime_to_tm(next->expires); @@ -925,6 +931,7 @@ reprogram: } else rtc_alarm_disable(rtc); +out: pm_relax(rtc->dev.parent); mutex_unlock(&rtc->ops_lock); } |