[PATCH v3 1/2] cpufreq: Return -EOPNOTSUPP if no policy is boost supported

[Lifeng Zheng]

In cpufreq_boost_trigger_state(), if all the policies are boost
unsupported, policy_set_boost() will not be called and this function will
return 0. But it is better to return an error to indicate that the platform
doesn't support boost.

Signed-off-by: Lifeng Zheng <zhenglifeng1@xxxxxxxxxx>
Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
---
 drivers/cpufreq/cpufreq.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index e8d7544b77b8..a4399e5490da 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2806,7 +2806,7 @@ static int cpufreq_boost_trigger_state(int state)
 {
 	struct cpufreq_policy *policy;
 	unsigned long flags;
-	int ret = 0;
+	int ret = -EOPNOTSUPP;
 
 	/*
 	 * Don't compare 'cpufreq_driver->boost_enabled' with 'state' here to
@@ -2826,6 +2826,10 @@ static int cpufreq_boost_trigger_state(int state)
 		if (ret)
 			goto err_reset_state;
 	}
+
+	if (ret)
+		goto err_reset_state;
+
 	cpus_read_unlock();
 
 	return 0;
-- 
2.33.0