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.
This also removes code setting policy->cur as this is also done by POSTCHANGE notifier.
Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- drivers/cpufreq/arm_big_little.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/cpufreq/arm_big_little.c b/drivers/cpufreq/arm_big_little.c index 5d7f53f..3549f07 100644 --- a/drivers/cpufreq/arm_big_little.c +++ b/drivers/cpufreq/arm_big_little.c @@ -84,11 +84,9 @@ static int bL_cpufreq_set_target(struct cpufreq_policy *policy, ret = clk_set_rate(clk[cur_cluster], freqs.new * 1000); if (ret) { pr_err("clk_set_rate failed: %d\n", ret); - return ret; + freqs.new = freqs.old; }
- policy->cur = freqs.new; - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return ret;