drivers/generic/max98357a: Add extra error handling
It is possible that acpi_device_scope() and acpi_device_name() can
return NULL to indicate an error, so add error handling to check their
return values.
Change-Id: I4c7ab0c592845d9d5f142e078fc2b505a99ecd12
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Found-by: Coverity CID 1362592
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33028
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/drivers/generic/max98357a/max98357a.c b/src/drivers/generic/max98357a/max98357a.c
index 1408dac..838491d 100644
--- a/src/drivers/generic/max98357a/max98357a.c
+++ b/src/drivers/generic/max98357a/max98357a.c
@@ -36,9 +36,14 @@
if (!dev->enabled || !config)
return;
+ const char *scope = acpi_device_scope(dev);
+ const char *name = acpi_device_name(dev);
+ if (!scope || !name)
+ return;
+
/* Device */
- acpigen_write_scope(acpi_device_scope(dev));
- acpigen_write_device(acpi_device_name(dev));
+ acpigen_write_scope(scope);
+ acpigen_write_device(name);
acpigen_write_name_string("_HID", MAX98357A_ACPI_HID);
acpigen_write_name_integer("_UID", 0);
acpigen_write_name_string("_DDN", dev->chip_ops->name);