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From: Mika Kuoppala <mika.kuoppala@linux.intel.com>
To: Paulo Zanoni <przanoni@gmail.com>, intel-gfx@lists.freedesktop.org
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Subject: Re: [PATCH 06/10] drm/i915: POSTING_READ(DEIER) on ivybridge_irq_handler
Date: Fri, 19 Jul 2013 15:54:21 +0300	[thread overview]
Message-ID: <87r4eu90ci.fsf@gaia.fi.intel.com> (raw)
In-Reply-To: <1373657718-3008-7-git-send-email-przanoni@gmail.com>

Paulo Zanoni <przanoni@gmail.com> writes:

> From: Paulo Zanoni <paulo.r.zanoni@intel.com>
>
> 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 <paulo.r.zanoni@intel.com>

Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>

> ---
>  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 7bc36ae..bdaab93 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -1310,6 +1310,7 @@ 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
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

  reply	other threads:[~2013-07-19 12:54 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-12 19:35 [PATCH 00/10] Unify ILK/SNB/IVB/HSW IRQ vfuncs Paulo Zanoni
2013-07-12 19:35 ` [PATCH 01/10] drm/i915: kill ivybridge_irq_preinstall Paulo Zanoni
2013-07-19 12:02   ` Mika Kuoppala
2013-07-12 19:35 ` [PATCH 02/10] drm/i915: extract ilk_display_irq_handler Paulo Zanoni
2013-07-19 12:14   ` Mika Kuoppala
2013-07-19 14:24     ` Paulo Zanoni
2013-07-19 16:04       ` Daniel Vetter
2013-07-12 19:35 ` [PATCH 03/10] drm/i915: extract ivb_display_irq_handler Paulo Zanoni
2013-07-19 12:15   ` Mika Kuoppala
2013-07-12 19:35 ` [PATCH 04/10] drm/i915: don't read or write GEN6_PMIIR on Gen 5 Paulo Zanoni
2013-07-12 19:46   ` Chris Wilson
2013-07-12 22:52     ` [PATCH 4/9] " Paulo Zanoni
2013-07-19 12:18       ` Mika Kuoppala
2013-07-12 19:35 ` [PATCH 05/10] drm/i915: reorganize ironlake_irq_handler Paulo Zanoni
2013-07-12 19:48   ` Chris Wilson
2013-07-12 22:54     ` [PATCH 5/9] " Paulo Zanoni
2013-07-19 12:35       ` Mika Kuoppala
2013-07-12 19:35 ` [PATCH 06/10] drm/i915: POSTING_READ(DEIER) on ivybridge_irq_handler Paulo Zanoni
2013-07-19 12:54   ` Mika Kuoppala [this message]
2013-07-12 19:35 ` [PATCH 07/10] drm/i915: add ILK/SNB support to ivybridge_irq_handler Paulo Zanoni
2013-07-12 22:56   ` [PATCH 7/9] " Paulo Zanoni
2013-07-19 13:09     ` Mika Kuoppala
2013-07-12 19:35 ` [PATCH 08/10] drm/i915: kill ivybridge_enable_vblank Paulo Zanoni
2013-07-12 19:50   ` Chris Wilson
2013-07-12 23:00     ` [PATCH 8/9] drm/i915: kill Ivybridge vblank irq vfuncs Paulo Zanoni
2013-07-19 13:30       ` Mika Kuoppala
2013-07-12 19:35 ` [PATCH 09/10] drm/i915: kill ivybridge_disable_vblank Paulo Zanoni
2013-07-12 19:35 ` [PATCH 10/10] drm/i915: kill ivybridge_irq_postinstall Paulo Zanoni
2013-07-12 19:52   ` Chris Wilson
2013-07-12 23:01     ` [PATCH 9/9] " Paulo Zanoni
2013-07-19 13:44       ` Mika Kuoppala
2013-07-19 16:11         ` Daniel Vetter

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