linux-kernel - Re: [PATCH 1/2] usb-serial : fix the nousb oops

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Date:	Mon, 2 Feb 2009 09:43:04 +0800
From:	Dave Young <hidave.darkstar@...il.com>
To:	Greg KH <greg@...ah.com>
Cc:	wgreathouse@...a.com, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] usb-serial : fix the nousb oops

On Sun, Feb 1, 2009 at 11:51 PM, Greg KH <greg@...ah.com> wrote:
> On Sun, Feb 01, 2009 at 06:53:23PM +0800, Dave Young wrote:
>>
>> In case with "nousb" booting, serial drivers will trigger kernel oops.
>
> They will?  What is the oops message?

Yes, they will, at lease I saw usb_serial/aircable/ftdi_sio oops. I
will manage to copy the oops message later.

>
>> Here add usb_disabled() check in usb_serial_init and usb_serial_register
>
> This is odd, is it something new?  Why is usb-serial the only driver
> that needs such a thing?

No, it is not new thing.  usb serial drivers normally call
usb_serial_register first, then usb_register, usb_register will fail
due to "nousb" checking, but usb_serial_register no.

>
> confused,
>
> greg k-h
>



-- 
Regards
dave
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