diff options
| author | Takashi Iwai <tiwai@suse.de> | 2013-03-11 18:40:16 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-03-17 22:57:46 +0100 |
| commit | 3b4f819d5eac94ba8fe5e8c061f6dabfe8d7b22c (patch) | |
| tree | 1a36540e1629581ffa103be5a81fc85230458377 /drivers/gpu | |
| parent | 3118a4f652c7b12c752f3222af0447008f9b2368 (diff) | |
Revert "drm/i915: try to train DP even harder"
This reverts commit 0d71068835e2610576d369d6d4cbf90e0f802a71.
Not only that the commit introduces a bogus check (voltage_tries == 5
will never meet at the inserted code path), it brings the i915 driver
into an endless dp-train loop on HP Z1 desktop machine with IVY+eDP.
At least reverting this commit recovers the framebuffer (but X is
still broken by other reasons...)
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 6f728e5ee793..d46dde5a51e3 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1930,7 +1930,7 @@ intel_dp_start_link_train(struct intel_dp *intel_dp) for (i = 0; i < intel_dp->lane_count; i++) if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) break; - if (i == intel_dp->lane_count && voltage_tries == 5) { + if (i == intel_dp->lane_count) { ++loop_tries; if (loop_tries == 5) { DRM_DEBUG_KMS("too many full retries, give up\n"); |