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

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Message-ID: <20080521110616.GB9330@homac>
Date:	Wed, 21 May 2008 13:06:17 +0200
From:	Holger Macht <hmacht@...e.de>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	kristen.c.accardi@...el.com, Len Brown <lenb@...nel.org>
Subject: Re: [PATCH] bay: Exit if notify handler cannot be installed

On Wed 21. May - 11:59:44, Matthew Garrett wrote:
> On Wed, May 21, 2008 at 12:45:47PM +0200, Holger Macht wrote:
> > If acpi_install_notify_handler() for a bay device fails, the bay driver is
> > superfluous. Most likely, another driver (like libata) is already caring
> > about this device anyway. Furthermore,
> > register_hotplug_dock_device(acpi_handle) from the dock driver must not be
> > called twice with the same handler. This would result in an endless loop
> > consuming 100% of CPU. So clean up and exit.
> 
> The bay driver still provides the only mechanism for calling the eject 
> methods.

Yes, I'll send a patch on top of the libata hotplug fixes as soon as it's
in for that. But this patch has nothing to do with this. Without it, you
get an unusable system.

Regards,
	Holger

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