From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paulo Zanoni Subject: [PATCH 5/6] drm/i915: POSTING_READ(DEIER) on ivybridge_irq_handler Date: Thu, 4 Jul 2013 17:21:10 -0300 Message-ID: <1372969271-3814-6-git-send-email-przanoni@gmail.com> References: <1372969271-3814-1-git-send-email-przanoni@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-gg0-f178.google.com (mail-gg0-f178.google.com [209.85.161.178]) by gabe.freedesktop.org (Postfix) with ESMTP id 0F930E5FBD for ; Thu, 4 Jul 2013 13:21:59 -0700 (PDT) Received: by mail-gg0-f178.google.com with SMTP id l12so500967gge.23 for ; Thu, 04 Jul 2013 13:21:59 -0700 (PDT) In-Reply-To: <1372969271-3814-1-git-send-email-przanoni@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: intel-gfx@lists.freedesktop.org Cc: Paulo Zanoni List-Id: intel-gfx@lists.freedesktop.org From: Paulo Zanoni 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. Also, I'll add ILK/SNB support to ivybridge_irq_handler on the next patch. Signed-off-by: Paulo Zanoni --- 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 0aa784b..5cf8b07 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1287,6 +1287,7 @@ 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 -- 1.8.1.2