linux-kernel - [PATCH] thermal/drivers/devfreq_cooling: Fix wrong return on error path

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Date:   Fri, 19 Mar 2021 21:24:23 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     daniel.lezcano@...aro.org
Cc:     kernel test robot <lkp@...el.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Zhang Rui <rui.zhang@...el.com>,
        Amit Kucheria <amitk@...nel.org>,
        linux-pm@...r.kernel.org (open list:THERMAL),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] thermal/drivers/devfreq_cooling: Fix wrong return on error path

The following error is reported by kbuild:

 smatch warnings:
 drivers/thermal/devfreq_cooling.c:433 of_devfreq_cooling_register_power() warn: passing zero to 'ERR_PTR'

Fix the error code by the setting the 'err' variable instead of 'cdev'.

Fixes: f8d354e821b2 ("thermal/drivers/devfreq_cooling: Use device name instead of auto-numbering")
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 drivers/thermal/devfreq_cooling.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/devfreq_cooling.c b/drivers/thermal/devfreq_cooling.c
index fb250ac16f50..3a788ac4f525 100644
--- a/drivers/thermal/devfreq_cooling.c
+++ b/drivers/thermal/devfreq_cooling.c
@@ -402,7 +402,7 @@ of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df,
 	if (err < 0)
 		goto free_table;
 
-	cdev = ERR_PTR(-ENOMEM);
+	err = -ENOMEM;
 	name = kasprintf(GFP_KERNEL, "devfreq-%s", dev_name(dev));
 	if (!name)
 		goto remove_qos_req;
-- 
2.25.1