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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-06-19 07:48:20 +0200 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2013-06-24 14:49:01 +0200 |
| commit | 6cdc9ef32c62d3863c922300b00ef29718f06593 (patch) | |
| tree | ca4be743506aa27cc7e1b0d7d74b2349706f900b /drivers/cpufreq | |
| parent | cpufreq: omap: call CPUFREQ_POSTCHANGE notfier in error cases (diff) | |
| download | linux-6cdc9ef32c62d3863c922300b00ef29718f06593.tar.xz linux-6cdc9ef32c62d3863c922300b00ef29718f06593.zip | |
cpufreq: s3c64xx: call CPUFREQ_POSTCHANGE notfier in error cases
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.
Cc: Mark Brown <broonie@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/s3c64xx-cpufreq.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/cpufreq/s3c64xx-cpufreq.c b/drivers/cpufreq/s3c64xx-cpufreq.c index 27cacb524796..017ade0af36b 100644 --- a/drivers/cpufreq/s3c64xx-cpufreq.c +++ b/drivers/cpufreq/s3c64xx-cpufreq.c @@ -104,7 +104,8 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy, if (ret != 0) { pr_err("Failed to set VDDARM for %dkHz: %d\n", freqs.new, ret); - goto err; + freqs.new = freqs.old; + goto post_notify; } } #endif @@ -113,10 +114,13 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy, if (ret < 0) { pr_err("Failed to set rate %dkHz: %d\n", freqs.new, ret); - goto err; + freqs.new = freqs.old; } +post_notify: cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); + if (ret) + goto err; #ifdef CONFIG_REGULATOR if (vddarm && freqs.new < freqs.old) { |