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: Stephen Warren <[email protected]> Signed-off-by: Viresh Kumar <[email protected]> --- drivers/cpufreq/tegra-cpufreq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/tegra-cpufreq.c b/drivers/cpufreq/tegra-cpufreq.c index c74c0e1..e74d777 100644 --- a/drivers/cpufreq/tegra-cpufreq.c +++ b/drivers/cpufreq/tegra-cpufreq.c @@ -138,12 +138,12 @@ static int tegra_update_cpu_speed(struct cpufreq_policy *policy, if (ret) { pr_err("cpu-tegra: Failed to set cpu frequency to %d kHz\n", freqs.new); - return ret; + freqs.new = freqs.old; } cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - return 0; + return ret; } static unsigned long tegra_cpu_highest_speed(void) -- 1.7.12.rc2.18.g61b472e -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
