linux-kernel - Re: usb/host/pci-quirks: Add option for setting handoff timeout for ehci

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Date:	Fri, 06 Mar 2009 20:26:45 +0100
From:	Martin Bammer <mrbm74@...il.com>
To:	Greg KH <greg@...ah.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: usb/host/pci-quirks: Add option for setting handoff timeout
 for ehci

Yes right. It fails faster, because the bios doesn't handoff the device.
But it's no help for the user that he always has to wait 8s because of a
buggy bios. Although the handoff fails the usb-controller works without
any problems.

> > When having a buggy BIOS which doesn't do ehci handoff correctly a 8s
> > boot delay is the result. This patch adds a kernel command line
> > parameter ehci_ho_to to be able to set an arbitrary timeout. On my
> > netbook I've set it to 50 which works without any problems. Maybe the
> > patch would be interesting for others?
> 
> I don't see how this makes anything go faster, you are just changing the
> timeout value, which should only make things fail faster, not succeed
> faster :)
> 
> thanks,
> 
> greg k-h

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