From f77f146599146ddc19e0454170c06ddff75bc81f Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Wed, 19 Jun 2013 14:23:03 +0530 Subject: cpufreq: pcc: 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 the sequence of calling notifiers is complete. This patch fixes it. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/pcc-cpufreq.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/cpufreq/pcc-cpufreq.c') diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c index 0de00081a81e..1581fcc4cf4a 100644 --- a/drivers/cpufreq/pcc-cpufreq.c +++ b/drivers/cpufreq/pcc-cpufreq.c @@ -243,6 +243,8 @@ static int pcc_cpufreq_target(struct cpufreq_policy *policy, return 0; cmd_incomplete: + freqs.new = freqs.old; + cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); iowrite16(0, &pcch_hdr->status); spin_unlock(&pcc_lock); return -EINVAL; -- cgit v1.2.1