From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Vetter <daniel@ffwll.ch>
Subject: Re: [PATCH v2 4/8] drm/fb-helper: Add fb_deferred_io support
Date: Wed, 27 Apr 2016 13:14:20 +0200
Message-ID: <20160427111420.GA2558@phenom.ffwll.local>
References: <1461530942-22485-1-git-send-email-noralf@tronnes.org>
 <1461530942-22485-5-git-send-email-noralf@tronnes.org>
 <20160425090957.GQ2510@phenom.ffwll.local>
 <571F9656.1090506@tronnes.org>
 <20160426171902.GA2558@phenom.ffwll.local>
 <57208A3B.4020909@tronnes.org>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <dri-devel-bounces@lists.freedesktop.org>
Received: from mail-wm0-x244.google.com (mail-wm0-x244.google.com
 [IPv6:2a00:1450:400c:c09::244])
 by gabe.freedesktop.org (Postfix) with ESMTPS id F185C6EA6B
 for <dri-devel@lists.freedesktop.org>; Wed, 27 Apr 2016 11:14:24 +0000 (UTC)
Received: by mail-wm0-x244.google.com with SMTP id w143so11870106wmw.3
 for <dri-devel@lists.freedesktop.org>; Wed, 27 Apr 2016 04:14:24 -0700 (PDT)
Content-Disposition: inline
In-Reply-To: <57208A3B.4020909@tronnes.org>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Errors-To: dri-devel-bounces@lists.freedesktop.org
Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
To: Noralf =?iso-8859-1?Q?Tr=F8nnes?= <noralf@tronnes.org>
Cc: linux-fbdev@vger.kernel.org, tomi.valkeinen@ti.com, laurent.pinchart@ideasonboard.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
List-Id: dri-devel@lists.freedesktop.org
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