linux-kernel - [PATCH -next] firmware: Google VPD: Fix return value check in vpd_platform

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Message-Id: <20170426134252.17627-1-weiyj.lk@gmail.com>
Date:   Wed, 26 Apr 2017 13:42:52 +0000
From:   Wei Yongjun <weiyj.lk@...il.com>
To:     Wei-Ning Huang <wnhuang@...gle.com>,
        Thierry Escande <thierry.escande@...labora.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Wei Yongjun <weiyongjun1@...wei.com>, linux-kernel@...r.kernel.org
Subject: [PATCH -next] firmware: Google VPD: Fix return value check in vpd_platform_init()

From: Wei Yongjun <weiyongjun1@...wei.com>

In case of error, the function platform_device_register_simple()
returns ERR_PTR() and never returns NULL. The NULL test in the
return value check should be replaced with IS_ERR().

Fixes: 049a59db34eb ("firmware: Google VPD sysfs driver")
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
 drivers/firmware/google/vpd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/firmware/google/vpd.c b/drivers/firmware/google/vpd.c
index 619f4ba..3ce8131 100644
--- a/drivers/firmware/google/vpd.c
+++ b/drivers/firmware/google/vpd.c
@@ -303,8 +303,8 @@ static int __init vpd_platform_init(void)
 	struct platform_device *pdev;
 
 	pdev = platform_device_register_simple("vpd", -1, NULL, 0);
-	if (!pdev)
-		return -ENODEV;
+	if (IS_ERR(pdev))
+		return PTR_ERR(pdev);
 
 	vpd_kobj = kobject_create_and_add("vpd", firmware_kobj);
 	if (!vpd_kobj)