drm/i915: Constify LUT entries in checker

The LUT checker doesn't modify the LUT entries so make them const.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606191504.18099-2-ville.syrjala@linux.intel.com
Reviewed-by: Animesh Manna <animesh.manna@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
index 5918e2e9bcddf20df4513785286d415534ba81bb..cdca3a89fa9c7688fc78170091730456415afe56 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_color.c
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -2932,16 +2932,16 @@ static int icl_pre_csc_lut_precision(const struct intel_crtc_state *crtc_state)
        return 16;
 }
 
-static bool err_check(struct drm_color_lut *lut1,
-                     struct drm_color_lut *lut2, u32 err)
+static bool err_check(const struct drm_color_lut *lut1,
+                     const struct drm_color_lut *lut2, u32 err)
 {
        return ((abs((long)lut2->red - lut1->red)) <= err) &&
                ((abs((long)lut2->blue - lut1->blue)) <= err) &&
                ((abs((long)lut2->green - lut1->green)) <= err);
 }
 
-static bool intel_lut_entries_equal(struct drm_color_lut *lut1,
-                                   struct drm_color_lut *lut2,
+static bool intel_lut_entries_equal(const struct drm_color_lut *lut1,
+                                   const struct drm_color_lut *lut2,
                                    int lut_size, u32 err)
 {
        int i;
@@ -2958,7 +2958,7 @@ static bool intel_lut_equal(const struct drm_property_blob *blob1,
                            const struct drm_property_blob *blob2,
                            int check_size, int precision)
 {
-       struct drm_color_lut *lut1, *lut2;
+       const struct drm_color_lut *lut1, *lut2;
        int lut_size1, lut_size2;
        u32 err;