From 57e33781ce5aaab86b4db7799f3505988b5226e2 Mon Sep 17 00:00:00 2001
From: Sachin Kamat <sachin.kamat@linaro.org>
Date: Fri, 24 Jan 2014 16:23:22 +0530
Subject: ASoC: samsung: Add NULL check in i2s.c

'res' could be NULL from one of the operations above (line 1243). Thus
check 'res' for NULL before releasing the region to avoid null pointer
dereference.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 92f64363..a9da24f 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1268,7 +1268,8 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 
 	return 0;
 err:
-	release_mem_region(regs_base, resource_size(res));
+	if (res)
+		release_mem_region(regs_base, resource_size(res));
 
 	return ret;
 }
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