dlan17/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ASoC: amd: Adjust error handling in case of absent codec device

Browse Source 
acpi_get_first_physical_node() can return NULL in several cases (no such
device, ACPI table error, reference count drop to 0, etc).
Existing check just emit error message, but doesn't perform return.
Then this NULL pointer is passed to devm_acpi_dev_add_driver_gpios()
where it is dereferenced.

Adjust this error handling by adding error code return.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 02527c3f23 ("ASoC: amd: add Machine driver for Jadeite platform")
Signed-off-by: Aleksandr Mishin <amishin@t-argos.ru>
Link: https://patch.msgid.link/20240703191007.8524-1-amishin@t-argos.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Aleksandr Mishin
2024-07-03 22:10:07 +03:00
committed by Mark Brown
parent 9f3ae72c5d
commit 5080808c33
1 changed files with 3 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
sound/soc/amd/acp-es8336.c
+3 -1
View File
@@ -203,8 +203,10 @@ static int st_es8336_late_probe(struct snd_soc_card *card)
codec_dev = acpi_get_first_physical_node(adev);
acpi_dev_put(adev);
if (!codec_dev)
if (!codec_dev) {
dev_err(card->dev, "can not find codec dev\n");
return -ENODEV;
}
ret = devm_acpi_dev_add_driver_gpios(codec_dev, acpi_es8336_gpios);
if (ret)