From: Prathyush K <prathyush.k@samsung.com>
Date: Tue, 2 Apr 2013 11:23:01 +0000 (+0530)
Subject: ASoC: Samsung: return error if drvdata is not set
X-Git-Tag: upstream/snapshot3+hdmi~5112^2~53^2~33^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a9b977ecd3dbc5d4f0fe0b3d5c66d284859b1f2a;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

ASoC: Samsung: return error if drvdata is not set

This patch fixes a possible crash in case drvdata for the secondary
device is not set.

Signed-off-by: Prathyush K <prathyush.k@samsung.com>
Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index d7231e3..f1fc064 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1107,6 +1107,10 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 
 	if (samsung_dai_type == TYPE_SEC) {
 		sec_dai = dev_get_drvdata(&pdev->dev);
+		if (!sec_dai) {
+			dev_err(&pdev->dev, "Unable to get drvdata\n");
+			return -EFAULT;
+		}
 		snd_soc_register_dai(&sec_dai->pdev->dev,
 			&sec_dai->i2s_dai_drv);
 		asoc_dma_platform_register(&pdev->dev);