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| author | Jerome Glisse <jglisse@redhat.com> | 2011-01-26 17:51:03 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-21 12:45:01 -0700 |
| commit | df00c3d5194963ac1bcd7a234d98681a46e1148a (patch) | |
| tree | c2435a6549112e278b8f9a975a9f031c1263c952 /drivers | |
| parent | 30877fc89aec3196b6572915144ec6c2882b0608 (diff) | |
| download | kernel-common-df00c3d5194963ac1bcd7a234d98681a46e1148a.tar.gz kernel-common-df00c3d5194963ac1bcd7a234d98681a46e1148a.tar.bz2 kernel-common-df00c3d5194963ac1bcd7a234d98681a46e1148a.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>
Diffstat (limited to 'drivers')
| -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 99915a682d59..8aa5d932e946 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; |