From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: Re: [PATCH] drm/i915: Sync the hotplug work when device suspending Date: Sat, 27 Jul 2013 10:40:14 +0100 Message-ID: <20130727094014.GC3132@cantiga.alporthouse.com> References: <1374946982.28551.4.camel@cliu38-desktop-build> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1374946982.28551.4.camel@cliu38-desktop-build> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-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: Chuansheng Liu Cc: airlied@linux.ie, daniel.vetter@ffwll.ch, intel-gfx@lists.freedesktop.org, fei.li@intel.com, dri-devel@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org On Sun, Jul 28, 2013 at 01:43:02AM +0800, Chuansheng Liu wrote: > > It is possible that during i915 device suspending with one pending > hotplug work, one of cases is the device resume/suspend quickly. > > At this case, the hotplug work will be executed even after device > is OFF, in Intel Android platform, it will cause system hang. See 1343070574-23917-1-git-send-email-chris@chris-wilson.co.uk http://lists.freedesktop.org/archives/intel-gfx/2012-July/019144.html which is in response to the bug raised here s5hlilr4s9h.wl%tiwai@suse.de http://lists.freedesktop.org/archives/intel-gfx/2012-April/016738.html -Chris -- Chris Wilson, Intel Open Source Technology Centre