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

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Date:	Wed, 28 Jul 2010 06:56:25 -0700
From:	Greg KH <greg@...ah.com>
To:	Ming Lei <tom.leiming@...il.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

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?

thanks,

greg k-h
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