linux-kernel - [PATCH 3/3] powercap: arm_scmi: Fix a NULL vs IS

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Date:   Wed, 17 Aug 2022 11:54:24 +0100
From:   Cristian Marussi <cristian.marussi@....com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-pm@...r.kernel.org
Cc:     sudeep.holla@....com, james.quinlan@...adcom.com,
        Jonathan.Cameron@...wei.com, f.fainelli@...il.com,
        etienne.carriere@...aro.org, vincent.guittot@...aro.org,
        daniel.lezcano@...aro.org, tarek.el-sherbiny@....com,
        adrian.slatineanu@....com, souvik.chakravarty@....com,
        wleavitt@...vell.com, wbartczak@...vell.com,
        dan.carpenter@...cle.com
Subject: [PATCH 3/3] powercap: arm_scmi: Fix a NULL vs IS_ERR() bug

From: Dan Carpenter <dan.carpenter@...cle.com>

The powercap_register_control_type() return error pointers.  It never
returns NULL.

Fixes: 31afdd34f2b9 ("powercap: arm_scmi: Add SCMI powercap based driver")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 drivers/powercap/arm_scmi_powercap.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/powercap/arm_scmi_powercap.c b/drivers/powercap/arm_scmi_powercap.c
index dc26cbb32b35..9993b7fa4993 100644
--- a/drivers/powercap/arm_scmi_powercap.c
+++ b/drivers/powercap/arm_scmi_powercap.c
@@ -521,8 +521,8 @@ static int __init scmi_powercap_init(void)
 	int ret;
 
 	scmi_top_pcntrl = powercap_register_control_type(NULL, "arm-scmi", NULL);
-	if (!scmi_top_pcntrl)
-		return -ENODEV;
+	if (IS_ERR(scmi_top_pcntrl))
+		return PTR_ERR(scmi_top_pcntrl);
 
 	ret = scmi_register(&scmi_powercap_driver);
 	if (ret)
-- 
2.32.0