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thermal: da9062/61: Prevent hardware access during system suspend

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[ Upstream commit 760eea43f8c6d48684f1f34b8a02fddc1456e849 ]

The workqueue used for monitoring the hardware may run while the device
is already suspended.  Fix this by using the freezable system workqueue
instead, cfr. commit 51e20d0e3a60cf46 ("thermal: Prevent polling from
happening during system suspend").

Fixes: 608567aac3206ae8 ("thermal: da9062/61: Thermal junction temperature monitoring driver")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Geert Uytterhoeven 2018-10-12 09:20:17 +02:00 committed by Greg Kroah-Hartman
parent ef5d27e1ed
commit 0a76f5c5b1
1 changed files with 2 additions and 2 deletions
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4
drivers/thermal/da9062-thermal.c
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@ -106,7 +106,7 @@ static void da9062_thermal_poll_on(struct work_struct *work)
THERMAL_EVENT_UNSPECIFIED);
delay = msecs_to_jiffies(thermal->zone->passive_delay);
schedule_delayed_work(&thermal->work, delay);
queue_delayed_work(system_freezable_wq, &thermal->work, delay);
return;
}
@ -125,7 +125,7 @@ static irqreturn_t da9062_thermal_irq_handler(int irq, void *data)
struct da9062_thermal *thermal = data;
disable_irq_nosync(thermal->irq);
schedule_delayed_work(&thermal->work, 0);
queue_delayed_work(system_freezable_wq, &thermal->work, 0);
return IRQ_HANDLED;
}