[PATCH] PM / devfreq: Send the DEVFREQ_POSTCHANGE notification when target() is failed

From	Chanwoo Choi <cw00.choi@samsung.com>
Newsgroups	linux.kernel
Subject	[PATCH] PM / devfreq: Send the DEVFREQ_POSTCHANGE notification when target() is failed
Date	2016-06-23 04:20 +0200
Message-ID	<rN2pj-3uG-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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This patch sends the DEVFREQ_POSTCHANGE notification when
devfreq->profile->targer() is failed. The PRECHANGE/POSTCHANGE
should be paired.

Fixes: 0fe3a66410a3 ("PM / devfreq: Add new DEVFREQ_TRANSITION_NOTIFIER notifier")
Reported-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
---
 drivers/devfreq/devfreq.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 1d6c803804d5..387799fec4c3 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -268,8 +268,11 @@ int update_devfreq(struct devfreq *devfreq)
 	devfreq_notify_transition(devfreq, &freqs, DEVFREQ_PRECHANGE);
 
 	err = devfreq->profile->target(devfreq->dev.parent, &freq, flags);
-	if (err)
+	if (err) {
+		freqs.new = cur_freq;
+		devfreq_notify_transition(devfreq, &freqs, DEVFREQ_POSTCHANGE);
 		return err;
+	}
 
 	freqs.new = freq;
 	devfreq_notify_transition(devfreq, &freqs, DEVFREQ_POSTCHANGE);
-- 
1.9.1

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[PATCH] PM / devfreq: Send the DEVFREQ_POSTCHANGE notification when  target() is failed Chanwoo Choi <cw00.choi@samsung.com> - 2016-06-23 04:20 +0200
  Re: [PATCH] PM / devfreq: Send the DEVFREQ_POSTCHANGE notification  when target() is failed "Rafael J. Wysocki" <rafael@kernel.org> - 2016-06-23 15:50 +0200
    Re: [PATCH] PM / devfreq: Send the DEVFREQ_POSTCHANGE notification  when target() is failed Chanwoo Choi <cwchoi00@gmail.com> - 2016-06-23 16:30 +0200

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