Fixes gcc '-Wunused-but-set-variable' warning:

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c: In function 
dwb_program_horz_scalar:
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c:725:11: warning: variable 
h_ratio_chroma set but not used [-Wunused-but-set-variable]
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c: In function 
dwb_program_vert_scalar:
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c:806:11: warning: variable 
v_ratio_chroma set but not used [-Wunused-but-set-variable]

They are not used since commit 345429a67c48 ("drm/amd/display:
Add DCN2 DWB")

Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: zhengbin <zhengbi...@huawei.com>
---
 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c 
b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c
index cd8bc92..880954a 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c
@@ -722,7 +722,6 @@ bool dwb_program_horz_scalar(struct dcn20_dwbc *dwbc20,
                struct scaling_taps num_taps)
 {
        uint32_t h_ratio_luma = 1;
-       uint32_t h_ratio_chroma = 1;
        uint32_t h_taps_luma = num_taps.h_taps;
        uint32_t h_taps_chroma = num_taps.h_taps_c;
        int32_t h_init_phase_luma = 0;
@@ -747,7 +746,6 @@ bool dwb_program_horz_scalar(struct dcn20_dwbc *dwbc20,
                h_ratio_luma = -1;
        else
                h_ratio_luma = dc_fixpt_u3d19(tmp_h_ratio_luma) << 5;
-       h_ratio_chroma = h_ratio_luma * 2;

        /*Program ratio*/
        REG_UPDATE(WBSCL_HORZ_FILTER_SCALE_RATIO, WBSCL_H_SCALE_RATIO, 
h_ratio_luma);
@@ -803,7 +801,6 @@ bool dwb_program_vert_scalar(struct dcn20_dwbc *dwbc20,
                enum dwb_subsample_position subsample_position)
 {
        uint32_t v_ratio_luma = 1;
-       uint32_t v_ratio_chroma = 1;
        uint32_t v_taps_luma = num_taps.v_taps;
        uint32_t v_taps_chroma = num_taps.v_taps_c;
        int32_t v_init_phase_luma = 0;
@@ -827,7 +824,6 @@ bool dwb_program_vert_scalar(struct dcn20_dwbc *dwbc20,
                v_ratio_luma = -1;
        else
                v_ratio_luma = dc_fixpt_u3d19(tmp_v_ratio_luma) << 5;
-       v_ratio_chroma = v_ratio_luma * 2;

        /*Program ratio*/
        REG_UPDATE(WBSCL_VERT_FILTER_SCALE_RATIO, WBSCL_V_SCALE_RATIO, 
v_ratio_luma);
--
2.7.4

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