[PATCH] drm/amdgpu/display: protect DCN specific stuff in process_deferred_updates

[Alex Deucher]

Need to protect this function with CONFIG_DRM_AMD_DC_DCN.

Fixes: bfd34644dedb ("drm/amd/display: Defer LUT memory powerdown until LUT 
bypass latches")
Cc: Michael Strauss <michael.stra...@amd.com>
Cc: Eric Yang <eric.ya...@amd.com>
Cc: Anson Jacob <anson.ja...@amd.com>
Reported-by: Stephen Rothwell <s...@canb.auug.org.au>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c 
b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 0f0440408a16..b113e7e74ded 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1802,12 +1802,14 @@ static bool is_flip_pending_in_pipes(struct dc *dc, 
struct dc_state *context)
  */
 static void process_deferred_updates(struct dc *dc)
 {
+#ifdef CONFIG_DRM_AMD_DC_DCN
        int i;
 
        if (dc->debug.enable_mem_low_power.bits.cm)
                for (i = 0; i < dc->dcn_ip->max_num_dpp; i++)
                        if (dc->res_pool->dpps[i]->funcs->dpp_deferred_update)
                                
dc->res_pool->dpps[i]->funcs->dpp_deferred_update(dc->res_pool->dpps[i]);
+#endif
 }
 
 void dc_post_update_surfaces_to_stream(struct dc *dc)
-- 
2.31.1