From mboxrd@z Thu Jan  1 00:00:00 1970
From: Damien Lespiau <damien.lespiau@intel.com>
Subject: Re: [PATCH 6/7] drm/i915: check the power well on
 i915_pipe_enabled
Date: Fri, 19 Apr 2013 06:52:36 +0100
Message-ID: <20130419055236.GF23752@strange.amr.corp.intel.com>
References: <1366313746-3659-1-git-send-email-przanoni@gmail.com>
	<1366313746-3659-7-git-send-email-przanoni@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org>
Received: from mga03.intel.com (mga03.intel.com [143.182.124.21])
	by gabe.freedesktop.org (Postfix) with ESMTP id C22B4E66AD
	for <intel-gfx@lists.freedesktop.org>;
	Thu, 18 Apr 2013 22:52:38 -0700 (PDT)
Content-Disposition: inline
In-Reply-To: <1366313746-3659-7-git-send-email-przanoni@gmail.com>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/intel-gfx>,
	<mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
	<mailto:intel-gfx-request@lists.freedesktop.org?subject=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: Paulo Zanoni <przanoni@gmail.com>
Cc: intel-gfx@lists.freedesktop.org, Paulo Zanoni <paulo.r.zanoni@intel.com>
List-Id: intel-gfx@lists.freedesktop.org

On Thu, Apr 18, 2013 at 04:35:45PM -0300, Paulo Zanoni wrote:
> From: Paulo Zanoni <paulo.r.zanoni@intel.com>
> 
> This fixes "unclaimed register" messages when the power well is
> disabled and there's a GPU hang.
> 
> v2: Use the new intel_display_power_enabled().
> 
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
> ---
>  drivers/gpu/drm/i915/i915_irq.c |    4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index 932e7f8..fda2998 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -184,6 +184,10 @@ i915_pipe_enabled(struct drm_device *dev, int pipe)
>  	enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
>  								      pipe);
>  
> +	if (cpu_transcoder != TRANSCODER_EDP &&
> +	    !intel_display_power_enabled(dev, POWER_DOMAIN_OTHER))
> +		return false;
> +

Same remark as in patch 3, I'd rather have a simplified logic asking
explicitely if the transcoder we're checking is powered.

-- 
Damien