diff options
| author | Jerome Glisse <jglisse@redhat.com> | 2011-01-26 17:51:03 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-17 15:15:12 -0800 |
| commit | c2292251cb106ee742b70f215aa721e056cd4a7b (patch) | |
| tree | e6e8a674dfc0490f030814beadc692703e8ff8c6 | |
| parent | e3a409e3ef6b4ac321bb060d8ae5236e4ce06998 (diff) | |
| download | linux-stable-c2292251cb106ee742b70f215aa721e056cd4a7b.tar.gz linux-stable-c2292251cb106ee742b70f215aa721e056cd4a7b.tar.bz2 linux-stable-c2292251cb106ee742b70f215aa721e056cd4a7b.zip | |
radeon/kms: fix dp displayport mode validation
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>
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_dp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 4e7778d44b8d..695de9a38506 100644 --- 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(u8 dpcd[DP_DPCD_SIZE], int 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; |