drm/amd/display: Correctly respond in psr enablement interface

[Why]
dc_link_set_psr_allow_active() always returns true, even in the case
that PSR is not supported.

[How]
Hook up the return value of dc_link_set_psr_allow_active().

Signed-off-by: Camille Cho <Camille.Cho@amd.com>
Reviewed-by: Josip Pavic <Josip.Pavic@amd.com>
Acked-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@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 114ee29..f020b3b 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -2557,12 +2557,14 @@ bool dc_link_set_psr_allow_active(struct dc_link *link, bool allow_active, bool
        struct dmcu *dmcu = dc->res_pool->dmcu;
        struct dmub_psr *psr = dc->res_pool->psr;
 
+       link->psr_settings.psr_allow_active = allow_active;
+
        if (psr != NULL && link->psr_settings.psr_feature_enabled)
                psr->funcs->psr_enable(psr, allow_active);
        else if ((dmcu != NULL && dmcu->funcs->is_dmcu_initialized(dmcu)) && link->psr_settings.psr_feature_enabled)
                dmcu->funcs->set_psr_enable(dmcu, allow_active, wait);
-
-       link->psr_settings.psr_allow_active = allow_active;
+       else
+               return false;
 
        return true;
 }