linux-kernel - [PATCH] cpuidle: remove redundant check in cpuidle_switch

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Message-ID: <20220829011534.445092-1-liaoyu15@huawei.com>
Date:   Mon, 29 Aug 2022 09:15:34 +0800
From:   Yu Liao <liaoyu15@...wei.com>
To:     <rafael@...nel.org>, <daniel.lezcano@...aro.org>
CC:     <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <liaoyu15@...wei.com>, <liwei391@...wei.com>
Subject: [PATCH] cpuidle: remove redundant check in cpuidle_switch_governor

gov has already been NULL checked at the beginning of
cpuidle_switch_governor, so remove redundant check.

And use pr_info instead printk to fix the following checkpatch warning.

WARNING: Prefer [subsystem eg: netdev]_info([subsystem]dev, ... then
dev_info(dev, ... then pr_info(...  to printk(KERN_INFO ...

Signed-off-by: Yu Liao <liaoyu15@...wei.com>
---
 drivers/cpuidle/governor.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/cpuidle/governor.c b/drivers/cpuidle/governor.c
index 29acaf48e575..9e6865edb942 100644
--- a/drivers/cpuidle/governor.c
+++ b/drivers/cpuidle/governor.c
@@ -63,12 +63,10 @@ int cpuidle_switch_governor(struct cpuidle_governor *gov)
 
 	cpuidle_curr_governor = gov;
 
-	if (gov) {
-		list_for_each_entry(dev, &cpuidle_detected_devices, device_list)
-			cpuidle_enable_device(dev);
-		cpuidle_install_idle_handler();
-		printk(KERN_INFO "cpuidle: using governor %s\n", gov->name);
-	}
+	list_for_each_entry(dev, &cpuidle_detected_devices, device_list)
+		cpuidle_enable_device(dev);
+	cpuidle_install_idle_handler();
+	pr_info("cpuidle: using governor %s\n", gov->name);
 
 	return 0;
 }
-- 
2.25.1