From mboxrd@z Thu Jan  1 00:00:00 1970
From: Lukas Wunner <lukas-JFq808J9C/izQB+pC5nmwQ@public.gmane.org>
Subject: Re: [PATCH 1/5] drm/nouveau: Prevent RPM callback
 recursion in suspend/resume paths
Date: Wed, 18 Jul 2018 10:25:05 +0200
Message-ID: <20180718082505.GB16072@wunner.de>
References: <20180716235936.11268-1-lyude@redhat.com>
 <20180716235936.11268-2-lyude@redhat.com>
 <20180717071641.GA5411@wunner.de>
 <d7c25a7f41df70685c0c4726315592d1d9b561ff.camel@redhat.com>
 <20180717182041.GA18363@wunner.de>
 <CAJZ5v0g8O8J0U8V-gLMe+NnTd3xgZ5_pjr9p2oci7yAfW54B-A@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
Content-Disposition: inline
In-Reply-To: <CAJZ5v0g8O8J0U8V-gLMe+NnTd3xgZ5_pjr9p2oci7yAfW54B-A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/nouveau>,
 <mailto:nouveau-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/nouveau>
List-Post: <mailto:nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
List-Help: <mailto:nouveau-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/nouveau>,
 <mailto:nouveau-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=subscribe>
Errors-To: nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Sender: "Nouveau" <nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
To: "Rafael J. Wysocki" <rafael-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Linux PM <linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, David Airlie <airlied-cv59FeDIM0c@public.gmane.org>, nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, Linux Kernel Mailing List <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, dri-devel <dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>, Ben Skeggs <bskeggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
List-Id: dri-devel@lists.freedesktop.org
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==