[Intel-gfx] [PATCH 04/14] drm/i915: Drop the extra GEN8_PCU_IIR posting read from cherryview_irq_preinstall()

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Looks like a leftover POSTING_READ(GEN8_PCU_IIR) in
cherryview_irq_preinstall() from some earlier age. GEN5_IRQ_RESET()
already does the posting read so this changes nothing, so kill it.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_irq.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 1ec4ebb..1e4062d 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -3188,8 +3188,6 @@ static void cherryview_irq_preinstall(struct drm_device *dev)
 
 	GEN5_IRQ_RESET(GEN8_PCU_);
 
-	POSTING_READ(GEN8_PCU_IIR);
-
 	I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK_CHV);
 
 	I915_WRITE(PORT_HOTPLUG_EN, 0);
-- 
2.0.4