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[10/13] cpufreq: powernow-k8: call CPUFREQ_POSTCHANGE notfier in error cases

Message ID 07d316c551e66b387254f0f544e18e415b9c181d.1371630975.git.viresh.kumar@linaro.org
State Accepted
Headers show

Commit Message

Viresh Kumar June 19, 2013, 8:53 a.m. UTC 
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 patch fixes it.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/cpufreq/powernow-k8.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
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Patch

diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c
index b828efe..c916320 100644
--- a/drivers/cpufreq/powernow-k8.c
+++ b/drivers/cpufreq/powernow-k8.c
@@ -967,9 +967,9 @@  static int transition_frequency_fidvid(struct powernow_k8_data *data,
 
 	res = transition_fid_vid(data, fid, vid);
 	if (res)
-		return res;
-
-	freqs.new = find_khz_freq_from_fid(data->currfid);
+		freqs.new = freqs.old;
+	else
+		freqs.new = find_khz_freq_from_fid(data->currfid);
 
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 	return res;