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drm/i915: Convert uncleared FIFO underrun message to errors 

Some platforms have a shared error interrupt, so if FIFO underrun
reporting gets disabled for one pipe/transcoder it gets disabled
for all pipes/transcoders.

When we disable FIFO underrun reporting we check whether the
interrupt was enabled or not. If it wasn't we might have missed
an underrun and we perform one last check right there. Currently
we print a debug message when an underrun is detect using this
mechanism. Promote the message to DRM_ERROR() to match the other
underrun error messages.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-05-16 19:40:23 +03:00 committed by Daniel Vetter
parent 5cc9ed4b9a
commit 823c690958
1 changed files with 4 additions and 4 deletions
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8
drivers/gpu/drm/i915/i915_irq.c
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@ -350,8 +350,8 @@ static void ivybridge_set_fifo_underrun_reporting(struct drm_device *dev,
if (!was_enabled &&
(I915_READ(GEN7_ERR_INT) & ERR_INT_FIFO_UNDERRUN(pipe))) {
DRM_DEBUG_KMS("uncleared fifo underrun on pipe %c\n",
pipe_name(pipe));
DRM_ERROR("uncleared fifo underrun on pipe %c\n",
pipe_name(pipe));
}
}
}
@ -435,8 +435,8 @@ static void cpt_set_fifo_underrun_reporting(struct drm_device *dev,
if (!was_enabled &&
(tmp & SERR_INT_TRANS_FIFO_UNDERRUN(pch_transcoder))) {
DRM_DEBUG_KMS("uncleared pch fifo underrun on pch transcoder %c\n",
transcoder_name(pch_transcoder));
DRM_ERROR("uncleared pch fifo underrun on pch transcoder %c\n",
transcoder_name(pch_transcoder));
}
}
}