linux-kernel - [PATCH] cpu_pm: add syscore

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Message-Id: <20180301032754.146788-1-dbasehore@chromium.org>
Date:   Wed, 28 Feb 2018 19:27:54 -0800
From:   Derek Basehore <dbasehore@...omium.org>
To:     linux-kernel@...r.kernel.org
Cc:     bigeasy@...utronix.de, rafael.j.wysocki@...el.com,
        alex.shi@...aro.org, briannorris@...omium.org,
        marc.zyngier@....com, Derek Basehore <dbasehore@...omium.org>
Subject: [PATCH] cpu_pm: add syscore_suspend error handling

If cpu_cluster_pm_enter() fails, cpu_pm_exit() should be called. This
will put the CPU in the correct state to resume from the failure.

Signed-off-by: Derek Basehore <dbasehore@...omium.org>
---
 kernel/cpu_pm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/cpu_pm.c b/kernel/cpu_pm.c
index 67b02e138a47..03bcc0751a51 100644
--- a/kernel/cpu_pm.c
+++ b/kernel/cpu_pm.c
@@ -186,6 +186,9 @@ static int cpu_pm_suspend(void)
 		return ret;
 
 	ret = cpu_cluster_pm_enter();
+	if (ret)
+		cpu_pm_exit();
+
 	return ret;
 }
 
-- 
2.16.2.395.g2e18187dfd-goog