diff options
Diffstat (limited to 'include/drm/drm_crtc.h')
| -rw-r--r-- | include/drm/drm_crtc.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 6d4684242a00..a6fbc9e5e896 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -2592,10 +2592,14 @@ static inline struct drm_property *drm_property_find(struct drm_device *dev, static inline uint32_t drm_color_lut_extract(uint32_t user_input, uint32_t bit_precision) { - uint32_t val = user_input + (1 << (16 - bit_precision - 1)); + uint32_t val = user_input; uint32_t max = 0xffff >> (16 - bit_precision); - val >>= 16 - bit_precision; + /* Round only if we're not using full precision. */ + if (bit_precision < 16) { + val += 1UL << (16 - bit_precision - 1); + val >>= 16 - bit_precision; + } return clamp_val(val, 0, max); } |