drm: fix warnings in DSC

Remove always false comparisons due to limited range of nfl_bpg_offset
and scale_increment_interval fields.
Warnings detected when compiling with W=1.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190911084759.6946-1-benjamin.gaignard@st.com

diff --git a/drivers/gpu/drm/drm_dsc.c b/drivers/gpu/drm/drm_dsc.c
index 77f4e5ae4197259d78082bb9daf6cc6fcd922410..27e5c6036658b4551533447aae1d4202aff3aa7d 100644 (file)
--- a/drivers/gpu/drm/drm_dsc.c
+++ b/drivers/gpu/drm/drm_dsc.c
@@ -336,12 +336,6 @@ int drm_dsc_compute_rc_parameters(struct drm_dsc_config *vdsc_cfg)
        else
                vdsc_cfg->nfl_bpg_offset = 0;
 
-       /* 2^16 - 1 */
-       if (vdsc_cfg->nfl_bpg_offset > 65535) {
-               DRM_DEBUG_KMS("NflBpgOffset is too large for this slice height\n");
-               return -ERANGE;
-       }
-
        /* Number of groups used to code the entire slice */
        groups_total = groups_per_line * vdsc_cfg->slice_height;
 
@@ -371,11 +365,6 @@ int drm_dsc_compute_rc_parameters(struct drm_dsc_config *vdsc_cfg)
                vdsc_cfg->scale_increment_interval = 0;
        }
 
-       if (vdsc_cfg->scale_increment_interval > 65535) {
-               DRM_DEBUG_KMS("ScaleIncrementInterval is large for slice height\n");
-               return -ERANGE;
-       }
-
        /*
         * DSC spec mentions that bits_per_pixel specifies the target
         * bits/pixel (bpp) rate that is used by the encoder,