The default argument should be enum TRANSFER_FUNCTION_SRGB rather than the current boolean value which improperly maps to TRANSFER_FUNCTION_BT709. Commit9b3d76527f("drm/amd/display: Revert adding degamma coefficients") looks to have improperly reverted commitd020970959("drm/amd/display: Add regamma/degamma coefficients and set sRGB when TF is BT709") replacing the enum value with a boolean value. Cc: Krunoslav Kovac <Krunoslav.Kovac@amd.com> Cc: Jaehyun Chung <jaehyun.chung@amd.com> Cc: Zeng Heng <zengheng4@huawei.com> Fixes:9b3d76527f("drm/amd/display: Revert adding degamma coefficients") Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>