ASoC: sdw_utils: Fix potential NULL pointer deref in is_sdca_endpoint_present()

Check the return value of kzalloc() and exit early to avoid a potential NULL pointer dereference.

---
 sound/soc/sdw_utils/soc_sdw_utils.c | 2 ++
 1 file changed, 2 insertions(+)

index 30f84f4e7637..b70cb3793d8f 100644
@@ -1180,6 +1180,8 @@ static int is_sdca_endpoint_present(struct device *dev,
 	int i;
 
 	dlc = kzalloc(sizeof(*dlc), GFP_KERNEL);
+	if (!dlc)
+		return -ENOMEM;
 
 	adr_end = &adr_dev->endpoints[end_index];
 	dai_info = &codec_info->dais[adr_end->num];

2.49.0

Thanks,
Charles

Applied to

https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: sdw_utils: Fix potential NULL pointer deref in is_sdca_endpoint_present()

      commit: 6325766d69900d1aa9733fc7572456fc4427b708

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

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Thanks,
Mark