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drm/i915: Check for underruns after crtc disable

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To get a better idea if underruns occurred during crtc disabling,
let's check for them explicitly. This helps in cases where the
error interrupt isn't active, or there is no underrun interrupt
support at all.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448050160-14124-3-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2015-11-20 22:09:20 +02:00
parent 7864578a70
commit 9bbc8258ae
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/i915/intel_display.c
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@ -13402,6 +13402,13 @@ static int intel_atomic_commit(struct drm_device *dev,
dev_priv->display.crtc_disable(crtc);
intel_crtc->active = false;
intel_disable_shared_dpll(intel_crtc);
/*
* Underruns don't always raise
* interrupts, so check manually.
*/
intel_check_cpu_fifo_underruns(dev_priv);
intel_check_pch_fifo_underruns(dev_priv);
}
}