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Commit 04ca8dc0 authored by Deepak Katragadda's avatar Deepak Katragadda
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qcom: ssr: Abort SSR when called on an offline subsystem 



Currently, if SSR is triggered on a subsystem that is offline,
a kernel panic is triggered. Instead of restarting the whole
device, print a warning and abort the SSR process.

Change-Id: Ib0e03a0527002fbaa847ada491b5d43c9b0c4ff8
Signed-off-by: default avatarDeepak Katragadda <dkatraga@codeaurora.org>
parent 51802bb1

drivers/soc/qcom/subsystem_restart.c

+6 −4
Original line number Diff line number Diff line
@@ -792,16 +792,18 @@ static void __subsystem_restart_dev(struct subsys_device *dev) 
	 * they want up until the point where the subsystem is shutdown.

	 */

	spin_lock_irqsave(&track->s_lock, flags);

	if (track->p_state != SUBSYS_CRASHED) {

		if (dev->track.state == SUBSYS_ONLINE &&

		    track->p_state != SUBSYS_RESTARTING) {

	if (track->p_state != SUBSYS_CRASHED &&

					dev->track.state == SUBSYS_ONLINE) {

		if (track->p_state != SUBSYS_RESTARTING) {

			track->p_state = SUBSYS_CRASHED;

			__pm_stay_awake(&dev->ssr_wlock);

			queue_work(ssr_wq, &dev->work);

		} else {

			panic("Subsystem %s crashed during SSR!", name);

		}

	}

	} else

		WARN(dev->track.state == SUBSYS_OFFLINE,

			"SSR aborted: %s subsystem not online\n", name);

	spin_unlock_irqrestore(&track->s_lock, flags);

}