From f948f1d02237038c05a84249d6972aca351537c0 Mon Sep 17 00:00:00 2001 From: Huacai Chen Date: Sat, 20 Jun 2020 20:04:43 +0800 Subject: [PATCH] rtc: goldfish: Enable interrupt in set_alarm() when necessary [ Upstream commit 22f8d5a1bf230cf8567a4121fc3789babb46336d ] When use goldfish rtc, the "hwclock" command fails with "select() to /dev/rtc to wait for clock tick timed out". This is because "hwclock" need the set_alarm() hook to enable interrupt when alrm->enabled is true. This operation is missing in goldfish rtc (but other rtc drivers, such as cmos rtc, enable interrupt here), so add it. Signed-off-by: Huacai Chen Signed-off-by: Jiaxun Yang Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/1592654683-31314-1-git-send-email-chenhc@lemote.com Signed-off-by: Sasha Levin --- drivers/rtc/rtc-goldfish.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/rtc/rtc-goldfish.c b/drivers/rtc/rtc-goldfish.c index 1a3420ee6a4d..d5083b013fbc 100644 --- a/drivers/rtc/rtc-goldfish.c +++ b/drivers/rtc/rtc-goldfish.c @@ -73,6 +73,7 @@ static int goldfish_rtc_set_alarm(struct device *dev, rtc_alarm64 = rtc_tm_to_time64(&alrm->time) * NSEC_PER_SEC; writel((rtc_alarm64 >> 32), base + TIMER_ALARM_HIGH); writel(rtc_alarm64, base + TIMER_ALARM_LOW); + writel(1, base + TIMER_IRQ_ENABLED); } else { /* * if this function was called with enabled=0