netdev - [PATCH -next] net: ethernet: bgmac: Fix return value check in bgmac

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Message-Id: <1468282648-1746-1-git-send-email-weiyj_lk@163.com>
Date:	Tue, 12 Jul 2016 00:17:28 +0000
From:	weiyj_lk@....com
To:	"David S . Miller" <davem@...emloft.net>,
	Arnd Bergmann <arnd@...db.de>,
	Florian Fainelli <f.fainelli@...il.com>,
	Jon Mason <jon.mason@...adcom.com>
Cc:	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>, netdev@...r.kernel.org
Subject: [PATCH -next] net: ethernet: bgmac: Fix return value check in bgmac_probe()

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

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

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 drivers/net/ethernet/broadcom/bgmac-platform.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bgmac-platform.c b/drivers/net/ethernet/broadcom/bgmac-platform.c
index 7a8f7ef..1a2d841 100644
--- a/drivers/net/ethernet/broadcom/bgmac-platform.c
+++ b/drivers/net/ethernet/broadcom/bgmac-platform.c
@@ -141,7 +141,7 @@ static int bgmac_probe(struct platform_device *pdev)
 	}
 
 	bgmac->plat.idm_base = devm_ioremap_resource(&pdev->dev, regs);
-	if (!bgmac->plat.idm_base) {
+	if (IS_ERR(bgmac->plat.idm_base)) {
 		dev_err(&pdev->dev, "Unable to map idm resource\n");
 		return PTR_ERR(bgmac->plat.idm_base);
 	}