| Date | Tue, 15 Feb 2011 16:15:02 -0800 | From | Greg KH <> | 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;
|