Commit 3a313862 authored Oct 12, 2018 by Geert Uytterhoeven Committed by Eduardo Valentin Oct 25, 2018

thermal: rcar_thermal: Prevent hardware access during system suspend



On r8a7791/koelsch, sometimes the following message is printed during
system suspend:

    rcar_thermal e61f0000.thermal: thermal sensor was broken

This happens if the workqueue runs while the device is already
suspended.  Fix this by using the freezable system workqueue instead,
cfr. commit 51e20d0e ("thermal: Prevent polling from happening
during system suspend").

Fixes: e0a5172e ("thermal: rcar: add interrupt support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

parent 853cbc1f

drivers/thermal/rcar_thermal.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -450,7 +450,7 @@ static irqreturn_t rcar_thermal_irq(int irq, void *data)
		rcar_thermal_for_each_priv(priv, common) {
		if (rcar_thermal_had_changed(priv, status)) {
		rcar_thermal_irq_disable(priv);
		schedule_delayed_work(&priv->work,
		queue_delayed_work(system_freezable_wq, &priv->work,
		msecs_to_jiffies(300));
		}
		}