drm/amd/display: Allow PSR exit when panel is disconnected

[HOW&WHY]
Fixed check to only avoid PSR entry when panel
is disconnected. PSR exit can be permitted to restore
the HW to it's non-PSR state.

Reviewed-by: Jayendran Ramani <Jayendran.Ramani@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Iswara Nagulendran <Iswara.Nagulendran@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 3d19fb92333be3544049a262d98de187045cfb99..895c6e6bfeb84390b859a0be863dcee03ba20718 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -3143,7 +3143,7 @@ bool dc_link_set_psr_allow_active(struct dc_link *link, const bool *allow_active
        if (!dc_get_edp_link_panel_inst(dc, link, &panel_inst))
                return false;
 
-       if (allow_active && link->type == dc_connection_none) {
+       if ((allow_active != NULL) && (*allow_active == true) && (link->type == dc_connection_none)) {
                // Don't enter PSR if panel is not connected
                return false;
        }