linux-kernel - Re: software unplug and plug USB

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Message-ID: <4700C649.90300@wpkg.org>
Date:	Mon, 01 Oct 2007 12:04:57 +0200
From:	Tomasz Chmielewski <mangoo@...g.org>
To:	Miguel <mc354@....es>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: software unplug and plug USB

Miguel schrieb:
> I also have a mobile phone connected, a gps and a keyboard, i do the
> following:
> 
> 
> ecar@...r:~$ lsmod | grep usb
> usbserial              29928  1 pl2303
> usbtouchscreen          8708  0 
> usbcore               130304  7
> libusual,pl2303,usbserial,usbtouchscreen,ehci_hcd,uhci_hcd
> ecar@...r:~$ rmmod pl2303
> ERROR: Removing 'pl2303': Operation not permitted
> ecar@...r:~$ sudo rmmod pl2303
> ecar@...r:~$ sudo rmmod usbserial

  Only then It's not enough. You also have to remove ehci_hcd / uhci_hcd 
/ ohci_hcd.the device will be powered off (unless the method described 
in the link given by Jiri Slaby powers the device off, too).


> ecar@...r:~$ modprobe usbserial
> FATAL: Error inserting usbserial
> (/lib/modules/2.6.17-11-386/kernel/drivers/usb/serial/usbserial.ko):
> Operation not permitted
> (reverse-i-search)`mod': cd backup_modules/

cd backup_modules/? Where do you keep your modules?


-- 
Tomasz Chmielewski
http://blog.wpkg.org
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