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drm/i915: Drop useless VLV_IIR writes from vlv_display_irq_postinstall() 

The extra VLV_IIR writes at the end of vlv_display_irq_postinstall()
serve no purpose. Remove them.

The VLV_IMR/IER/IIR setup at the start of the function also seems a bit
pointless since it doesn't unmask/enable anything. But leave it be for
now.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-10-30 19:43:01 +02:00 committed by Daniel Vetter
parent 0e6c9a9eb8
commit 9b2e8c9411
1 changed files with 0 additions and 3 deletions
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3
drivers/gpu/drm/i915/i915_irq.c
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@ -3444,9 +3444,6 @@ static void vlv_display_irq_postinstall(struct drm_i915_private *dev_priv)
if (dev_priv->display_irqs_enabled)
valleyview_display_irqs_install(dev_priv);
spin_unlock_irq(&dev_priv->irq_lock);
I915_WRITE(VLV_IIR, 0xffffffff);
I915_WRITE(VLV_IIR, 0xffffffff);
}
static int valleyview_irq_postinstall(struct drm_device *dev)