From 23a78516081c49398b6bf08d7a40e954048426bf Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Fri, 12 Jul 2013 16:35:14 -0300 Subject: [PATCH] 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: Paulo Zanoni Reviewed-by: Mika Kuoppala Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_irq.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 3ef8f23d4fa1..597a3d5ae7e1 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -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 -- 2.20.1