From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alexandre Belloni , Sasha Levin Subject: [PATCH 4.4 71/78] rtc: set the alarm to the next expiring timer Date: Fri, 22 Dec 2017 09:46:52 +0100 Message-Id: <20171222084604.935217849@linuxfoundation.org> In-Reply-To: <20171222084556.909780563@linuxfoundation.org> References: <20171222084556.909780563@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alexandre Belloni [ Upstream commit 74717b28cb32e1ad3c1042cafd76b264c8c0f68d ] If there is any non expired timer in the queue, the RTC alarm is never set. This is an issue when adding a timer that expires before the next non expired timer. Ensure the RTC alarm is set in that case. Fixes: 2b2f5ff00f63 ("rtc: interface: ignore expired timers when enqueuing new timers") Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/rtc/interface.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -764,7 +764,7 @@ static int rtc_timer_enqueue(struct rtc_ } timerqueue_add(&rtc->timerqueue, &timer->node); - if (!next) { + if (!next || ktime_before(timer->node.expires, next->expires)) { struct rtc_wkalrm alarm; int err; alarm.time = rtc_ktime_to_tm(timer->node.expires);