From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= <ville.syrjala@linux.intel.com>
Subject: Re: [PATCH v4 4/5] drm/i915: only flip frontbuffer if
	crtc is active
Date: Fri, 24 Oct 2014 18:07:15 +0300
Message-ID: <20141024150715.GG4284@intel.com>
References: <1414158695-31605-1-git-send-email-gustavo@padovan.org>
 <1414158695-31605-4-git-send-email-gustavo@padovan.org>
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To: Gustavo Padovan <gustavo@padovan.org>
Cc: intel-gfx@lists.freedesktop.org, Gustavo Padovan <gustavo.padovan@collabora.co.uk>, dri-devel@lists.freedesktop.org
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On Fri, Oct 24, 2014 at 02:51:34PM +0100, Gustavo Padovan wrote:
> From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
> =

> There is no point in flipping a buffer for a disabled crtc.

That thing doesn't actually flip but just signal the frontbuffer
tracking code that either has just flipped or is going to real soon now
(tm). But yeah, still makes no sense when the entire pipe is off, so:

Reviewed-by: Ville Syrj=E4l=E4 <ville.syrjala@linux.intel.com>

> =

> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
> ---
>  drivers/gpu/drm/i915/intel_display.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> =

> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/=
intel_display.c
> index 8530401..9a913f5 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -8544,9 +8544,9 @@ static int intel_crtc_cursor_set_obj(struct drm_crt=
c *crtc,
>  		if (old_width !=3D width)
>  			intel_update_watermarks(crtc);
>  		intel_crtc_update_cursor(crtc, intel_crtc->cursor_bo !=3D NULL);
> -	}
>  =

> -	intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_CURSOR(pipe));
> +		intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_CURSOR(pipe));
> +	}
>  =

>  	return 0;
>  fail_unpin:
> -- =

> 1.9.3
> =

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-- =

Ville Syrj=E4l=E4
Intel OTC