drm/amd/display: Use NULL instead of 0

Silence the following sparse warnings:

../drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:865:16:
sparse: warning: Using plain integer as NULL pointer

../drivers/gpu/drm/amd/amdgpu/../display/dc/dce110/dce110_hw_sequencer.c:1588:84:
sparse: warning: Using plain integer as NULL pointer

../drivers/gpu/drm/amd/amdgpu/../display/dc/dce110/dce110_hw_sequencer.c:2725:84:
sparse: warning: Using plain integer as NULL pointer

../drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_resource.c:1919:16:
sparse: warning: Using plain integer as NULL pointer

v2: drop removal of default case to avoid adding warnings (Alex)

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Magali Lemes <magalilemes00@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 4367a6e..cc8e60e 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -1924,7 +1924,7 @@ static struct audio *find_first_free_audio(
                        return pool->audios[i];
                }
        }
-       return 0;
+       return NULL;
 }
 
 /*

diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index ace04e2..8378b80 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -1585,7 +1585,7 @@ static enum dc_status apply_single_controller_ctx_to_hw(
                        hws->funcs.enable_stream_timing(pipe_ctx, context, dc);
        }
 
-       pipe_ctx->plane_res.scl_data.lb_params.alpha_en = pipe_ctx->bottom_pipe != 0;
+       pipe_ctx->plane_res.scl_data.lb_params.alpha_en = pipe_ctx->bottom_pipe != NULL;
 
        pipe_ctx->stream->link->psr_settings.psr_feature_enabled = false;
 
@@ -2722,7 +2722,7 @@ static void dce110_program_front_end_for_pipe(
 
        pipe_ctx->plane_res.xfm->funcs->transform_set_gamut_remap(pipe_ctx->plane_res.xfm, &adjust);
 
-       pipe_ctx->plane_res.scl_data.lb_params.alpha_en = pipe_ctx->bottom_pipe != 0;
+       pipe_ctx->plane_res.scl_data.lb_params.alpha_en = pipe_ctx->bottom_pipe != NULL;
 
        program_scaler(dc, pipe_ctx);
 

diff --git a/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c b/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
index ee55cda..560da6c 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
@@ -862,7 +862,7 @@ static struct clock_source *find_matching_pll(
                return NULL;
        }
 
-       return 0;
+       return NULL;
 }
 
 static enum dc_status build_mapped_resource(