linux-kernel - Re: 2.6.26.[1-3] + x61 tablet + x6ultrabase: no resume after?undocking

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Message-ID: <20080905090013.GC6891@homac>
Date:	Fri, 5 Sep 2008 11:00:13 +0200
From:	Holger Macht <hmacht@...e.de>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
Cc:	Steven King <sfking@...dc.com>, Tomas Carnecky <tom@...ervice.com>,
	Zhang Rui <rui.zhang@...el.com>, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org, ibm-acpi-devel@...ts.sourceforge.net
Subject: Re: 2.6.26.[1-3] + x61 tablet + x6ultrabase: no resume
	after?undocking

On Wed 03. Sep - 18:28:27, Henrique de Moraes Holschuh wrote:
> (Holger dropped from CC/To as requested by the mail-followup-to header).
> 
> On Wed, 03 Sep 2008, Holger Macht wrote:
> > On Mon 01. Sep - 12:05:04, Steven King wrote:
> > > On Monday 01 September 2008 5:16:44 Tomas Carnecky wrote:
> > > 
> > > > I just tested suspend/resume with the CDROM drive removed (an empty
> > > > bay). Suspend/resume now works just fine, regardless how I dock/undock
> > > > the laptop.
> > > 
> > > I'm seeing the exact same things as Tom.  Also, in my dmesg I see:
> > > 
> > > ACPI: \_SB_.PCI0.IDE0.PRIM.MSTR: found ejectable bay
> > > ACPI: \_SB_.PCI0.IDE0.PRIM.MSTR: Adding notify handler
> > > ACPI: Error installing bay notify handler
> > > 
> > > is this significant?
> > 
> > No, it's not. Bay driver is obsolete with 2.6.26's libata hotplug code.
> 
> Hardly so.  We need to be able to query state and command the bay from
> userspace.  We need to support non-libata devices.  We don't need, but want,
> notifications that can be easily flagged by userspace as being related to
> bay/dock ejections and insertions (for OSD).
> 
> What makes bay obsolete is the rework on the dock driver that adds all bay
> functionality to dock.c... and that ain't even on 2.6.27, AFAIK.

Maybe the statement was a little bit harsh, it's just that you won't need
bay in conjunction with libata, because it can't install the notification
handler because that was already done by libata.

Regards,
	Holger
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