linux-kernel - Re: [BUGFIX v2 0/4] fix bug 56531, 59501 and 59581

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Date:	Sat, 22 Jun 2013 21:59:33 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Jiang Liu <liuj97@...il.com>
Cc:	"Alexander E. Patrakov" <patrakov@...il.com>,
	Jiang Liu <jiang.liu@...wei.com>, alexdeucher@...il.com,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Yinghai Lu <yinghai@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Yijing Wang <wangyijing@...wei.com>,
	linux-acpi@...r.kernel.org,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [BUGFIX v2 0/4] fix bug 56531, 59501 and 59581

On Saturday, June 22, 2013 10:47:24 AM Jiang Liu wrote:
> On 06/22/2013 08:13 AM, Rafael J. Wysocki wrote:
> > On Saturday, June 22, 2013 12:54:21 AM Jiang Liu wrote:
> >> On 06/21/2013 03:06 AM, Rafael J. Wysocki wrote:
> >>> On Wednesday, June 19, 2013 11:18:41 AM Alexander E. Patrakov wrote:
> >>>> 2013/6/19 Rafael J. Wysocki <rjw@...k.pl>:
> >>>>> OK, let's try to untangle this a bit.
> >>>>>
> >>>>> If you applyt patches [1/4] and [4/4] from the $subject series only, what
> >>>>> does remain unfixed?
> >>>>
> >>>> [not tested, can do so in 12 hours if needed]
> >>>>
> >>>> I think there will be problems on undocking and/or on the second
> >>>> docking, as described in comments #6 - #8 of
> >>>> https://bugzilla.kernel.org/show_bug.cgi?id=59501
> >>>
> >>> OK, I think I have something that might work.  It may not solve all problems,
> >>> but maybe it helps a bit.  Unfortunately, I can't really test it, so please do
> >>> if you can.
> >>>
> >>> Please apply [1/4] and [4/4] and the one below and see what happens.
> >>>
> >>> Thanks,
> >>> Rafael
> >>>
> >>>
> >>> ---
> >>> Rationale:
> >>> 	acpiphp_glue.c:disable_device() trims the underlying ACPI device objects
> >>> 	after removing the companion PCI devices, so the dock station code
> >>> 	doesn't need to trim them separately for the dependent devices handled
> >>> 	by acpiphp.
> >>>
> >>> 	Moreover, acpiphp_glue.c is the only user of
> >>> 	[un]register_hotplug_dock_device(), so *all* devices on the
> >>> 	ds->hotplug_devices list are handled by acpiphp and ops is set for all
> >>> 	of them.
> >> Hi Rafael,
> >>     There's an ongoing patch to fix a disk bay hotplug regression, which
> >> may add a second caller of register_hotplug_device(). Please refer to
> >> bug 59871, and the proposed patch is at:
> >> https://bugzilla.kernel.org/attachment.cgi?id=105581
> Hi Rafael,
>     You can find the proposed patch for ATA Bay hotplug at
> https://bugzilla.kernel.org/attachment.cgi?id=105581

Well, maybe it'll have to be reworked slightly.

Which BZ entry is that?

Rafael


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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