summaryrefslogtreecommitdiff
path: root/drivers/gpu
diff options
context:
space:
mode:
authorKeith Packard <keithp@keithp.com>2011-11-02 10:17:59 -0700
committerKeith Packard <keithp@keithp.com>2011-11-16 20:26:27 -0800
commitb34f1f0931575bf1e1483472a5202b8247fa9b10 (patch)
treeff4b910728159eaf932fbaaa13f1cbb76e9724fe /drivers/gpu
parentf2e8b18af95358cf5407bf263cba04fc4c379123 (diff)
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>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/i915/intel_dp.c5
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;