drm/amd/powerplay: avoid NULL dereference, cz_hwmgr.c
if (a == NULL || a->b == NULL)
leads to a NULL pointer dereference if a == NULL.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
index b75fb12..5ecef17 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
@@ -1218,7 +1218,7 @@
static int cz_hwmgr_backend_fini(struct pp_hwmgr *hwmgr)
{
- if (hwmgr != NULL || hwmgr->backend != NULL) {
+ if (hwmgr != NULL && hwmgr->backend != NULL) {
kfree(hwmgr->backend);
kfree(hwmgr);
}