linux-kernel - [PATCH] hwmon: fix ptr

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Date:   Sun, 4 Oct 2020 14:37:55 +0800
From:   kernel test robot <lkp@...el.com>
To:     Naveen Krishna Chatradhi <nchatrad@....com>
Cc:     kbuild-all@...ts.01.org, linux-hwmon@...r.kernel.org,
        Guenter Roeck <linux@...ck-us.net>,
        Jean Delvare <jdelvare@...e.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] hwmon: fix ptr_ret.cocci warnings

From: kernel test robot <lkp@...el.com>

drivers/hwmon/amd_energy.c:302:1-3: WARNING: PTR_ERR_OR_ZERO can be used


 Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Fixes: 911766432fd2 ("hwmon: (amd_energy) Improve the accumulation logic")
CC: Naveen Krishna Chatradhi <nchatrad@....com>
Signed-off-by: kernel test robot <lkp@...el.com>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
head:   78a28192e301da58ac408f2e98fa30aebafbfda0
commit: 911766432fd2a6054d9813845ad3f48120bd649c [45/55] hwmon: (amd_energy) Improve the accumulation logic

 amd_energy.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

--- a/drivers/hwmon/amd_energy.c
+++ b/drivers/hwmon/amd_energy.c
@@ -299,10 +299,7 @@ static int amd_energy_probe(struct platf
 
 	data->wrap_accumulate = kthread_run(energy_accumulator, data,
 					    "%s", dev_name(hwmon_dev));
-	if (IS_ERR(data->wrap_accumulate))
-		return PTR_ERR(data->wrap_accumulate);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(data->wrap_accumulate);
 }
 
 static int amd_energy_remove(struct platform_device *pdev)