linux-kernel - Re: [PATCH] bay: Exit if notify handler cannot be installed

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Date:	Wed, 07 May 2008 09:27:38 +0800
From:	Shaohua Li <shaohua.li@...el.com>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
Cc:	Holger Macht <hmacht@...e.de>, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"Accardi, Kristen C" <kristen.c.accardi@...el.com>
Subject: Re: [PATCH] bay: Exit if notify handler cannot be installed

On Tue, 2008-05-06 at 22:13 -0300, Henrique de Moraes Holschuh wrote:
> On Wed, 07 May 2008, Shaohua Li wrote:
> > On Tue, 2008-05-06 at 12:18 -0300, Henrique de Moraes Holschuh wrote:
> > > On Tue, 06 May 2008, Shaohua Li wrote:
> > > > The bay driver is duplicated with libata, I thought we should delete it.
> > > > See bug http://bugzilla.kernel.org/show_bug.cgi?id=9526
> > > 
> > > The bay driver is currently useless, BUT it should handle a lot of stuff
> > > libata won't, such as bay batteries, bay floppies, and anything else in
> > > a bay that is not a hard disk.
> > > 
> > > The fact that the driver currently looks only after disks is just a bug.
> > > It should, in fact, bind to any ejectable device not already handled by
> > > a different driver.
> > Isn't this the job of acpi dock driver?
> 
> No, but I actually fail to see why do we even care about the difference
> from a dock to a bay.  Dock *could* be made to handle both.
It appears some systems haven't a dock but a bay. In a thinkpad, you
could hotplug cdrom/battery/harddisk in the slot of cdrom, but it's not
a dock. libata should handle it well (but it doesn't handle _EJ0
currently, I have a patch in above bugzilla).

But you are right, acpi dock driver should be extended to support bay.
I'll give it a try.

Thanks,
Shaohua

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