openwrt/target/linux/generic/backport-6.1/824-v6.5-leds-trigger-netdev-Remove-NULL-check-before-dev_-pu.patch

From af7320ecae0ce646fd2c4a88341a3fbc243553da Mon Sep 17 00:00:00 2001
From: Yang Li <yang.lee@linux.alibaba.com>
Date: Thu, 11 May 2023 15:08:20 +0800
Subject: [PATCH] leds: trigger: netdev: Remove NULL check before dev_{put,
 hold}

The call netdev_{put, hold} of dev_{put, hold} will check NULL,
so there is no need to check before using dev_{put, hold},
remove it to silence the warnings:

./drivers/leds/trigger/ledtrig-netdev.c:291:3-10: WARNING: NULL check before dev_{put, hold} functions is not needed.
./drivers/leds/trigger/ledtrig-netdev.c:401:2-9: WARNING: NULL check before dev_{put, hold} functions is not needed.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=4929
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/20230511070820.52731-1-yang.lee@linux.alibaba.com
Signed-off-by: Lee Jones <lee@kernel.org>
---
 drivers/leds/trigger/ledtrig-netdev.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/leds/trigger/ledtrig-netdev.c
+++ b/drivers/leds/trigger/ledtrig-netdev.c
@@ -462,8 +462,7 @@ static int netdev_trig_notify(struct not
 		get_device_state(trigger_data);
 		fallthrough;
 	case NETDEV_REGISTER:
-		if (trigger_data->net_dev)
-			dev_put(trigger_data->net_dev);
+		dev_put(trigger_data->net_dev);
 		dev_hold(dev);
 		trigger_data->net_dev = dev;
 		break;
@@ -594,8 +593,7 @@ static void netdev_trig_deactivate(struc
 
 	cancel_delayed_work_sync(&trigger_data->work);
 
-	if (trigger_data->net_dev)
-		dev_put(trigger_data->net_dev);
+	dev_put(trigger_data->net_dev);
 
 	kfree(trigger_data);
 }