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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-02-08 19:52:54 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2017-02-16 11:59:13 +0200 |
| commit | aa9323dd49b23932a09023012f050556de64f118 (patch) | |
| tree | 004ab4480f77f0fc466567885f2e7ab0e3959bd2 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | 44a027058b24541cc7ec499e6fb91db4b130648a (diff) | |
| download | op-kernel-dev-aa9323dd49b23932a09023012f050556de64f118.zip op-kernel-dev-aa9323dd49b23932a09023012f050556de64f118.tar.gz | |
drm/i915: Avoid spurious WARNs about the wrong pipe in the PPS code
Until recently vlv_steal_power_sequencer() wasn't being called for
normal DP ports, and hence it could assert that it should only be
called for pipe A and B (since pipe C doesn't support eDP). However
that changed when we started to consider normal DP ports as well when
choosing a PPS. So we will now get spurious warnings when
vlv_steal_power_sequencer() does get called for pipe C. Avoid this by
moving the WARN down into vlv_detach_power_sequencer() where this
assertion should still hold.
Cc: Imre Deak <imre.deak@intel.com>
Cc: stable@vger.kernel.org
Fixes: 9f2bdb006a7e ("drm/i915: Prevent PPS stealing from a normal DP port on VLV/CHV")
References: https://bugs.freedesktop.org/show_bug.cgi?id=95287
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170208175254.10958-1-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
(cherry picked from commit d158694f452252d0fef335a775aeb3eb74fe7af0)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 52822d6..d1670b8 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -2887,6 +2887,9 @@ static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) WARN_ON(intel_dp->active_pipe != INVALID_PIPE); + if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) + return; + edp_panel_vdd_off_sync(intel_dp); /* @@ -2914,9 +2917,6 @@ static void vlv_steal_power_sequencer(struct drm_device *dev, lockdep_assert_held(&dev_priv->pps_mutex); - if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) - return; - for_each_intel_encoder(dev, encoder) { struct intel_dp *intel_dp; enum port port; |
