Message-ID: <4FB3B40C.3030100@intel.com>
Date: Wed, 16 May 2012 22:05:00 +0800
From: Lan Tianyu <tianyu.lan@intel.com>
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To: Greg KH <gregkh@linuxfoundation.org>, levinsasha928@gmail.com
CC: mjg@redhat.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] usb: fix breakage on systems without ACPI
References: <1337170275-23859-1-git-send-email-levinsasha928@gmail.com> <20120516122153.GA31684@kroah.com>
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On 2012年5月16日 20:21:53, Greg KH wrote:
> On Wed, May 16, 2012 at 02:11:15PM +0200, Sasha Levin wrote:
>> Commit da0af6e ("usb: Bind devices to ACPI devices when possible") really
>> tries to force-bind devices even when impossible, unlike what it says in
>> the subject.
>>
>> CONFIG_ACPI is not an indication that ACPI tables are actually present, nor
>> is an indication that any USB relevant information is present in them. There
>> is no reason to fail the creation of a USB bus if it can't bind it to
>> ACPI device during initialization.
>>
>> On systems with CONFIG_ACPI set but without ACPI tables it would cause a
>> boot panic.
>
> Nice catch, sorry about that, I'll go queue this up.
>
> greg k-h

Oh. Sorry for this. I just test it on some my machines that have usb 
descriptor.
bring trouble for you.

--
Best Regards
Tianyu Lan
linux kernel enabling team
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