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Date: Wed, 17 Dec 2014 12:15:24 +0900 From: Hyogi Gim <hyogi.gim@....com> To: a.zummo@...ertech.it, akpm@...ux-foundation.org Cc: rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org Subject: [PATCH] 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@....com> --- drivers/rtc/interface.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 45bfc28ee..fa1f119 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -489,7 +489,10 @@ 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); @@ -867,13 +870,17 @@ 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) @@ -898,7 +905,6 @@ again: /* Set next alarm */ if (next) { struct rtc_wkalrm alarm; - int err; int retry = 3; alarm.time = rtc_ktime_to_tm(next->expires); @@ -920,6 +926,7 @@ reprogram: } else rtc_alarm_disable(rtc); +out: pm_relax(rtc->dev.parent); mutex_unlock(&rtc->ops_lock); } -- 1.8.3.2 -- Hyogi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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