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Commit 23a78516 authored by Paulo Zanoni's avatar Paulo Zanoni Committed by Daniel Vetter
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drm/i915: POSTING_READ(DEIER) on ivybridge_irq_handler 



We have this POSTING_READ inside ironlake_irq_handler. I suppose we
also want it on IVB because we want to stop the IRQ handler as soon as
possible at this point.

Signed-off-by: default avatarPaulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 27b9188e

drivers/gpu/drm/i915/i915_irq.c

+1 −0
Original line number Diff line number Diff line
@@ -1305,6 +1305,7 @@ static irqreturn_t ivybridge_irq_handler(int irq, void *arg) 
	/* disable master interrupt before clearing iir  */

	de_ier = I915_READ(DEIER);

	I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL);

	POSTING_READ(DEIER);



	/* Disable south interrupts. We'll only write to SDEIIR once, so further

	 * interrupts will will be stored on its back queue, and then we'll be