linux-kernel - Re: BUG: 'Unknown symbol in module' happens after reloading ehci-hcd module

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Message-ID: <AANLkTinMA7j4hBET+qHjakh7YZG9U71oni+LYne7=2sC@mail.gmail.com>
Date:	Wed, 28 Jul 2010 22:36:12 +0800
From:	Ming Lei <tom.leiming@...il.com>
To:	Greg KH <greg@...ah.com>
Cc:	linux-kernel@...r.kernel.org, linux-usb <linux-usb@...r.kernel.org>
Subject: Re: BUG: 'Unknown symbol in module' happens after reloading ehci-hcd 
	module

2010/7/28 Greg KH <greg@...ah.com>:
> On Wed, Jul 28, 2010 at 03:33:30PM +0800, Ming Lei wrote:
>> 2010/7/28 Ming Lei <tom.leiming@...il.com>:
>> > Hi,
>> >
>> > 'Unknown symbol in module' ?happens after the actions below:
>> >
>> > ? ? ? ? rmmod ehci-hcd
>> > ? ? ? ? modprobe ehci-hcd
>> >
>>
>> The issue is caused by returning failure of debugfs_create_dir, and
>> which may be fixed by replacing debugfs_remove with
>> debugfs_remove_recursive in ehci_hcd_cleanup.
>
> Or we can properly clean up all of the files, right?
>
> Care to send a patch to resolve this?

Sent, follows the patch's title:

           USB: ehci: fix remove of ehci debugfs dir

thanks,

-- 
Lei Ming
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