linux-kernel - [PATCH 4.0 42/72] ASoC: samsung: s3c24xx-i2s: Fix return value check in s3c24xx_iis_dev

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Date:	Mon, 11 May 2015 10:54:48 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	Krzysztof Kozlowski <k.kozlowski.k@...il.com>,
	Mark Brown <broonie@...nel.org>
Subject: [PATCH 4.0 42/72] ASoC: samsung: s3c24xx-i2s: Fix return value check in s3c24xx_iis_dev_probe()

4.0-stable review patch.  If anyone has any objections, please let me know.

------------------

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

commit c479163a1b6ab424786fbcd9225b4e3c1c58eb0b upstream.

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>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski.k@...il.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/soc/samsung/s3c24xx-i2s.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/sound/soc/samsung/s3c24xx-i2s.c
+++ b/sound/soc/samsung/s3c24xx-i2s.c
@@ -461,8 +461,8 @@ static int s3c24xx_iis_dev_probe(struct
 		return -ENOENT;
 	}
 	s3c24xx_i2s.regs = devm_ioremap_resource(&pdev->dev, res);
-	if (s3c24xx_i2s.regs == NULL)
-		return -ENXIO;
+	if (IS_ERR(s3c24xx_i2s.regs))
+		return PTR_ERR(s3c24xx_i2s.regs);
 
 	s3c24xx_i2s_pcm_stereo_out.dma_addr = res->start + S3C2410_IISFIFO;
 	s3c24xx_i2s_pcm_stereo_in.dma_addr = res->start + S3C2410_IISFIFO;


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