From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 18 May 2016 10:37:07 +0000
Subject: [patch] PM / devfreq: exynos-nocp: Checking for IS_ERR instead of NULL
Message-Id: <20160518103707.GA9436@mwanda>
List-Id: <kernel-janitors.vger.kernel.org>
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To: Chanwoo Choi <cw00.choi@samsung.com>
Cc: MyungJoo Ham <myungjoo.ham@samsung.com>, Kyungmin Park <kyungmin.park@samsung.com>, Kukjin Kim <kgene@kernel.org>, Krzysztof Kozlowski <k.kozlowski@samsung.com>, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, kernel-janitors@vger.kernel.org

The platform_get_resource() function returns NULL on error, it never
returns error pointers.

Fixes: 0179a913875a ('PM / devfreq: event: Add new Exynos NoC probe driver')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/devfreq/event/exynos-nocp.c b/drivers/devfreq/event/exynos-nocp.c
index 6b6a5f3..03b35d5 100644
--- a/drivers/devfreq/event/exynos-nocp.c
+++ b/drivers/devfreq/event/exynos-nocp.c
@@ -220,8 +220,8 @@ static int exynos_nocp_parse_dt(struct platform_device *pdev,
 
 	/* Maps the memory mapped IO to control nocp register */
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (IS_ERR(res))
-		return PTR_ERR(res);
+	if (!res)
+		return -ENXIO;
 
 	base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(base))