From: Fudongwang <fudong.wang@xxxxxxx>
[Why & How]
For DCN harvest case, if there is no dmcub support, we should return false
to avoid bugcheck later.
Reviewed-by: Aric Cyr <aric.cyr@xxxxxxx>
Signed-off-by: Jerry Zuo <jerry.zuo@xxxxxxx>
Signed-off-by: Fudongwang <fudong.wang@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 9897e322e2d5..f07b13ad4ead 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -5574,6 +5574,9 @@ void dc_mclk_switch_using_fw_based_vblank_stretch_shut_down(struct dc *dc)
*/
bool dc_is_dmub_outbox_supported(struct dc *dc)
{
+ if (!dc->caps.dmcub_support)
+ return false;
+
switch (dc->ctx->asic_id.chip_family) {
case FAMILY_YELLOW_CARP:
--
2.34.1
