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[PATCH] ASoC: davinci-mcasp: check memory allocation failure

From	Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Newsgroups	linux.kernel
Subject	[PATCH] ASoC: davinci-mcasp: check memory allocation failure
Date	2017-08-27 08:50 +0200
Message-ID	<uiZyp-40C-5@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Check memory allocation failures and return -ENOMEM in such cases, as
already done above for another memory allocation.

This avoids NULL pointers dereference.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
 sound/soc/davinci/davinci-mcasp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
index d486908d4e0e..f395bbc7c354 100644
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -1851,6 +1851,10 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
 	mcasp->context.xrsr_regs = devm_kzalloc(&pdev->dev,
 					sizeof(u32) * mcasp->num_serializer,
 					GFP_KERNEL);
+	if (!mcasp->context.xrsr_regs) {
+		ret = -ENOMEM;
+		goto err;
+	}
 #endif
 	mcasp->serial_dir = pdata->serial_dir;
 	mcasp->version = pdata->version;
-- 
2.11.0

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[PATCH] ASoC: davinci-mcasp: check memory allocation failure Christophe JAILLET <christophe.jaillet@wanadoo.fr> - 2017-08-27 08:50 +0200
  Applied "ASoC: davinci-mcasp: check memory allocation failure" to the asoc tree Mark Brown <broonie@kernel.org> - 2017-08-27 15:40 +0200

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