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    Subject[245/272] radeon/kms: fix dp displayport mode validation
    2.6.37-stable review patch.  If anyone has any objections, please let us know.

    ------------------

    From: Jerome Glisse <jglisse@redhat.com>

    commit 6bba2e116808ca12e30c8d88dfedabf8b8d67390 upstream.

    Check if there is a big enough dp clock & enough dp lane to
    drive the video mode provided.

    Signed-off-by: Jerome Glisse <jglisse@redhat.com>
    Reviewed-By: Alex Deucher <alexdeucher@gmail.com>
    Signed-off-by: Dave Airlie <airlied@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

    ---
    drivers/gpu/drm/radeon/atombios_dp.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    --- a/drivers/gpu/drm/radeon/atombios_dp.c
    +++ b/drivers/gpu/drm/radeon/atombios_dp.c
    @@ -187,9 +187,9 @@ static int dp_link_clock_for_mode_clock(
    int dp_mode_valid(u8 dpcd[DP_DPCD_SIZE], int mode_clock)
    {
    int lanes = dp_lanes_for_mode_clock(dpcd, mode_clock);
    - int bw = dp_lanes_for_mode_clock(dpcd, mode_clock);
    + int dp_clock = dp_link_clock_for_mode_clock(dpcd, mode_clock);

    - if ((lanes == 0) || (bw == 0))
    + if ((lanes == 0) || (dp_clock == 0))
    return MODE_CLOCK_HIGH;

    return MODE_OK;



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