On Wed, Jan 28, 2009 at 01:41:06PM +0800, Joreen Tan wrote:
>
> Hi,
>
> I have got this error message when i'm trying to use this two commands to
> free up the usb resource,
>
> modprobe -vr ehci_hcd
> modprobe -v ehci_hcd
>
> the error message is:
>
> usb_control_msg failed: error sending control message: Cannot send after
> transport endpoint shutdown
> Can anyone help me with this? i don't really quite understand this
> error message.. It was initially working fine until i tried it for
> the second time.. Regards,Joreen
>From the modprobe man page, note particularly the second paragraph:
-r --remove
This option causes modprobe to remove, rather than insert a mod-
ule. If the modules it depends on are also unused, modprobe
will try to remove them, too. Unlike insertion, more than one
module can be specified on the command line (it does not make
sense to specify module parameters when removing modules).
There is usually no reason to remove modules, but some buggy
modules require it. Your kernel may not support removal of mod-
ules.
Eric
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