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Subject[PATCH] rtc: cmos: Fix accidentally enabling rtc channel
Date
During resume, we call hpet_rtc_timer_init after masking an irq bit in hpet.
This will cause the call to hpet_disable_rtc_channel to be undone if RTC_AIE is
the only bit not masked.

Signed-off-by: Derek Basehore <dbasehore@chromium.org>
---
drivers/rtc/rtc-cmos.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index cc5bea9..ee0bc69 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -854,6 +854,10 @@ static int cmos_resume(struct device *dev)
}

spin_lock_irq(&rtc_lock);
+ if (device_may_wakeup(dev)) {
+ hpet_rtc_timer_init();
+ }
+
do {
CMOS_WRITE(tmp, RTC_CONTROL);
hpet_set_rtc_irq_bit(tmp & RTC_IRQMASK);
@@ -869,7 +873,6 @@ static int cmos_resume(struct device *dev)
rtc_update_irq(cmos->rtc, 1, mask);
tmp &= ~RTC_AIE;
hpet_mask_rtc_irq_bit(RTC_AIE);
- hpet_rtc_timer_init();
} while (mask & RTC_AIE);
spin_unlock_irq(&rtc_lock);
}
--
1.8.2.1


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