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 92f64363427d44b741f2293fa84982c748a72d82..a9da24f34834e090df988f41c0303683f373a506 100644 (file)
--- 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;
 }