diff options
| author | Jerome Glisse <jglisse@redhat.com> | 2011-01-26 17:51:03 -0500 |
|---|---|---|
| committer | Dave Airlie <airlied@gmail.com> | 2011-01-27 13:52:05 +1000 |
| commit | 6bba2e116808ca12e30c8d88dfedabf8b8d67390 (patch) | |
| tree | 92df638a6de6df44a63bab207404ed67c76dba67 /drivers/gpu | |
| parent | 52bb4a7391321b9f32c0b6e032d0a5e1796f1968 (diff) | |
| download | lwn-6bba2e116808ca12e30c8d88dfedabf8b8d67390.tar.gz lwn-6bba2e116808ca12e30c8d88dfedabf8b8d67390.zip | |
radeon/kms: fix dp displayport mode validation
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>
Cc: <stable@kernel.org>
Signed-off-by: Dave Airlie <airlied@gmail.com>
Diffstat (limited to 'drivers/gpu')
| -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; |