[PATCH 05/13] cpufreq: e_powersave: call CPUFREQ_POSTCHANGE notfier in error cases

[Viresh Kumar]

PRECHANGE and POSTCHANGE notifiers must be called in groups, i.e either both
should be called or both shouldn't be.

In case we have started PRECHANGE notifier and found an error, we must call
POSTCHANGE notifier with freqs.new = freqs.old to guarantee that sequence of
calling notifiers is complete.

This driver was taking care of it but frequency isn't restored to freqs.old.

This patch fixes it.

Cc: Simon Horman <horms@xxxxxxxxxxxx>
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
---
 drivers/cpufreq/e_powersaver.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c
index 37380fb..3d03626 100644
--- a/drivers/cpufreq/e_powersaver.c
+++ b/drivers/cpufreq/e_powersaver.c
@@ -161,6 +161,9 @@ postchange:
 		current_multiplier);
 	}
 #endif
+	if (err)
+		freqs.new = freqs.old;
+
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 	return err;
 }
-- 
1.7.12.rc2.18.g61b472e

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