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

[Thorsten Blum]

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

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 4f8ef33dd44a ("ASoC: soc_sdw_utils: skip the endpoint that doesn't present")
Signed-off-by: Thorsten Blum <thorsten.blum@xxxxxxxxx>
---
 sound/soc/sdw_utils/soc_sdw_utils.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/sdw_utils/soc_sdw_utils.c b/sound/soc/sdw_utils/soc_sdw_utils.c
index 30f84f4e7637..b70cb3793d8f 100644
--- a/sound/soc/sdw_utils/soc_sdw_utils.c
+++ b/sound/soc/sdw_utils/soc_sdw_utils.c
@@ -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