drivers/generic/gfx: Add null pointer error check
acpi_device_scope() will return NULL if it is unable to find the path
of the parent device. Return early if this is the case to prevent a null
pointer dereference.
Change-Id: I3eff1c1e3477c75c7130b52898de7d59692ba412
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Found-by: Coverity CID 1409672
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38669
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/drivers/generic/gfx/gfx.c b/src/drivers/generic/gfx/gfx.c
index b2bda4a..0386e9b 100644
--- a/src/drivers/generic/gfx/gfx.c
+++ b/src/drivers/generic/gfx/gfx.c
@@ -69,6 +69,9 @@
const char *scope = acpi_device_scope(dev);
+ if (!scope)
+ return;
+
acpigen_write_scope(scope);
/* Method (_DOD, 0) */