From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Vetter <daniel@ffwll.ch>
Subject: Re: [RFC 1/1] drm/i915 : Wait until SYSTEM_RUNNING
 before loading CSR firmware
Date: Tue, 14 Jul 2015 11:22:35 +0200
Message-ID: <20150714092235.GL3736@phenom.ffwll.local>
References: <1436805405-1134-1-git-send-email-jay.p.patel@intel.com>
 <1436805405-1134-2-git-send-email-jay.p.patel@intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from mail-wi0-f171.google.com (mail-wi0-f171.google.com
 [209.85.212.171])
 by gabe.freedesktop.org (Postfix) with ESMTPS id 01CD56E9D1
 for <intel-gfx@lists.freedesktop.org>; Tue, 14 Jul 2015 02:19:54 -0700 (PDT)
Received: by wibud3 with SMTP id ud3so8919149wib.0
 for <intel-gfx@lists.freedesktop.org>; Tue, 14 Jul 2015 02:19:52 -0700 (PDT)
Content-Disposition: inline
In-Reply-To: <1436805405-1134-2-git-send-email-jay.p.patel@intel.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>
Errors-To: intel-gfx-bounces@lists.freedesktop.org
Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
To: jay.p.patel@intel.com
Cc: Greg KH <gregkh@linuxfoundation.org>, intel-gfx@lists.freedesktop.org, LKML <linux-kernel@vger.kernel.org>
List-Id: intel-gfx@lists.freedesktop.org
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