linux-kernel - [PATCH] cpufreq: Use list_is_last() to check last entry of the policy list

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Date:	Mon, 25 Jan 2016 15:16:07 +0530
From:	"Gautham R. Shenoy" <ego@...ux.vnet.ibm.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Shilpasri G Bhat <shilpa.bhat@...ux.vnet.ibm.com>,
	Juri Lelli <juri.lelli@....com>,
	"Gautham R. Shenoy" <ego@...ux.vnet.ibm.com>
Subject: [PATCH] cpufreq: Use list_is_last() to check last entry of the policy list

Currently next_policy() explicitly checks if a policy is the last
policy in the cpufreq_policy_list. Use the standard list_is_last
primitive instead.

Cc: Viresh Kumar <viresh.kumar@...aro.org>
Signed-off-by: Gautham R. Shenoy <ego@...ux.vnet.ibm.com>
---
 drivers/cpufreq/cpufreq.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 78b1e2f..b3059a3 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -67,11 +67,11 @@ static struct cpufreq_policy *next_policy(struct cpufreq_policy *policy,
 {
 	lockdep_assert_held(&cpufreq_driver_lock);
 	do {
-		policy = list_next_entry(policy, policy_list);
-
 		/* No more policies in the list */
-		if (&policy->policy_list == &cpufreq_policy_list)
+		if (list_is_last(&policy->policy_list, &cpufreq_policy_list))
 			return NULL;
+
+		policy = list_next_entry(policy, policy_list);
 	} while (!suitable_policy(policy, active));
 
 	return policy;
-- 
1.9.3