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| author | Keith Packard <keithp@keithp.com> | 2011-11-02 10:17:59 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2011-11-16 20:26:27 -0800 |
| commit | b34f1f0931575bf1e1483472a5202b8247fa9b10 (patch) | |
| tree | ff4b910728159eaf932fbaaa13f1cbb76e9724fe | |
| parent | f2e8b18af95358cf5407bf263cba04fc4c379123 (diff) | |
| download | blackbird-op-linux-b34f1f0931575bf1e1483472a5202b8247fa9b10.tar.gz blackbird-op-linux-b34f1f0931575bf1e1483472a5202b8247fa9b10.zip | |
drm/i915: Initiate DP link training only on the lanes we'll be using
Limit the link training setting command to the lanes needed for the
current mode. It seems vaguely possible that a monitor will try to
train the other lanes and fail in some way, so this seems like the
safer plan.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 7bdf77e79798..8c3819b02a7f 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1564,8 +1564,9 @@ intel_dp_set_link_train(struct intel_dp *intel_dp, ret = intel_dp_aux_native_write(intel_dp, DP_TRAINING_LANE0_SET, - intel_dp->train_set, 4); - if (ret != 4) + intel_dp->train_set, + intel_dp->lane_count); + if (ret != intel_dp->lane_count) return false; return true; |
