diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-12-13 20:54:14 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-12 11:39:22 +0100 |
| commit | 1d9c33f1b45ccc1dfbf55c97d7e1d02155e05787 (patch) | |
| tree | 2ddd6e46d67ea41404a9abe20d8c68dd89e9b77c /drivers/gpu | |
| parent | 8b4879154a67442705bb1af6610832ee06689785 (diff) | |
drm/i915: tune down the fast link training vs boot fail
commit 2c57b18adb93fc070039538f1ce375d3d3e99bbb upstream.
It's been unfixed since a while and no one is immediately working on
this. And we have the FIXME already. And now also a task in the DP
team's backlog.
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: stable@vger.kernel.org
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
References: https://lists.freedesktop.org/archives/intel-gfx/2016-July/101951.html
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[danvet: Adjust comment per Ville's feedback.]
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161213195414.28923-1-daniel.vetter@ffwll.ch
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 2dd85aeb5bc99e3763dd192cdb95ff405a102c8a)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 45e99d571c9e..055525013d2f 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -4019,8 +4019,8 @@ intel_dp_check_link_status(struct intel_dp *intel_dp) return; /* FIXME: we need to synchronize this sort of stuff with hardware - * readout */ - if (WARN_ON_ONCE(!intel_dp->lane_count)) + * readout. Currently fast link training doesn't work on boot-up. */ + if (!intel_dp->lane_count) return; /* if link training is requested we should perform it always */ |