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    drm/radeon: finish getting bios earlier · 211fa4fc
    Igor Murzov 提交于
    Return a number of bytes read in radeon_atrm_get_bios_chunk() and
    properly check this value in radeon_atrm_get_bios().
    If radeon_atrm_get_bios_chunk() read less bytes then were requested,
    it means that it finished reading bios data.
    
    Prior to this patch, condition in radeon_atrm_get_bios() was always
    equivalent to "if (ATRM_BIOS_PAGE <= 0)", so it was always false,
    thus radeon_atrm_get_bios() was trying to read past the bios data
    wasting boot time.
    
    On my lenovo ideapad u455 laptop this patch drops bios reading time
    from ~5.5s to ~1.5s.
    Signed-off-by: NIgor Murzov <e-mail@date.by>
    Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
    Signed-off-by: NDave Airlie <airlied@redhat.com>
    211fa4fc
radeon_bios.c 15.4 KB