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

From: Christophe JAILLET
Date: Sun Aug 27 2017 - 02:49:22 EST


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@xxxxxxxxxx>
---
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