[PATCH 5/7] drm/amd/display: Guard vblank wq flush with DCN guards

[Wayne Lin]

From: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>

[Why]
Compilation of the workqueue fails if not building with the DCN config
option set.

[How]
Guard calls to the flush with the DCN config option to fix the build.

Reviewed-by: Roman Li <roman...@amd.com>
Acked-by: Wayne Lin <wayne....@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index cebd663b6708..816723691d51 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -8643,11 +8643,13 @@ static void amdgpu_dm_commit_planes(struct 
drm_atomic_state *state,
        /* Update the planes if changed or disable if we don't have any. */
        if ((planes_count || acrtc_state->active_planes == 0) &&
                acrtc_state->stream) {
+#if defined(CONFIG_DRM_AMD_DC_DCN)
                /*
                 * If PSR or idle optimizations are enabled then flush out
                 * any pending work before hardware programming.
                 */
                flush_workqueue(dm->vblank_control_workqueue);
+#endif
 
                bundle->stream_update.stream = acrtc_state->stream;
                if (new_pcrtc_state->mode_changed) {
@@ -8980,7 +8982,9 @@ static void amdgpu_dm_atomic_commit_tail(struct 
drm_atomic_state *state)
        if (dc_state) {
                /* if there mode set or reset, disable eDP PSR */
                if (mode_set_reset_required) {
+#if defined(CONFIG_DRM_AMD_DC_DCN)
                        flush_workqueue(dm->vblank_control_workqueue);
+#endif
                        amdgpu_dm_psr_disable_all(dm);
                }
 
-- 
2.25.1