From: Chris Park <Chris.Park@xxxxxxx>
[Why]
Virtualization enters blue screen of death (BSoD)
due to NULL res_pool object when accessing DSC
encoder capability.
[How]
Add NULL check to avoid blue screen of death.
Reviewed-by: Aric Cyr <Aric.Cyr@xxxxxxx>
Acked-by: Alan Liu <HaoPing.Liu@xxxxxxx>
Signed-off-by: Chris Park <Chris.Park@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index bc2150f3d79b..7af153434e9e 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -2335,6 +2335,9 @@ void dc_resource_state_construct(
bool dc_resource_is_dsc_encoding_supported(const struct dc *dc)
{
+ if (dc->res_pool == NULL)
+ return false;
+
return dc->res_pool->res_cap->num_dsc > 0;
}
--
2.25.1
