usb-uhci rmmod fun

usb-uhci rmmod fun

[Dave Jones]

Greg,
 wtf is going on here ?

(00:52:08:root@mindphaser:davej)# lsmod | grep floppy
(00:52:39:root@mindphaser:davej)# modprobe usb-uhci
(00:52:48:root@mindphaser:davej)# lsmod | grep floppy
(00:53:02:root@mindphaser:davej)# rmmod uhci_hcd
(00:53:11:root@mindphaser:davej)# lsmod | grep floppy
floppy                 58260  0
(00:53:13:root@mindphaser:davej)#

Unloading the usb controller loads the floppy controller!?

		Dave

Re: usb-uhci rmmod fun

[Greg KH]

On Wed, Feb 25, 2004 at 12:52:41AM +0000, Dave Jones wrote:
> Greg,
>  wtf is going on here ?
> 
> (00:52:08:root@mindphaser:davej)# lsmod | grep floppy
> (00:52:39:root@mindphaser:davej)# modprobe usb-uhci
> (00:52:48:root@mindphaser:davej)# lsmod | grep floppy
> (00:53:02:root@mindphaser:davej)# rmmod uhci_hcd
> (00:53:11:root@mindphaser:davej)# lsmod | grep floppy
> floppy                 58260  0
> (00:53:13:root@mindphaser:davej)#
> 
> Unloading the usb controller loads the floppy controller!?

Heh, I have no idea why that happens.  I can't duplicate that here.
What version of your hotplug scripts are you using?
What kernel version?
Do you have kmod enabled?

thanks,

greg k-h

Re: usb-uhci rmmod fun

[Johannes Erdfelt]

On Wed, Feb 25, 2004, Dave Jones <davej@redhat.com> wrote:
> Greg,
>  wtf is going on here ?
> 
> (00:52:08:root@mindphaser:davej)# lsmod | grep floppy
> (00:52:39:root@mindphaser:davej)# modprobe usb-uhci
> (00:52:48:root@mindphaser:davej)# lsmod | grep floppy
> (00:53:02:root@mindphaser:davej)# rmmod uhci_hcd
> (00:53:11:root@mindphaser:davej)# lsmod | grep floppy
> floppy                 58260  0
> (00:53:13:root@mindphaser:davej)#
> 
> Unloading the usb controller loads the floppy controller!?

That can't be right. You're loading usb-uhci, then unloading uhci_hcd.

You should have only have one, depending on the version of the kernel.

JE

Re: usb-uhci rmmod fun

[Dave Jones]

On Tue, Feb 24, 2004 at 07:13:48PM -0800, Johannes Erdfelt wrote:

 > > (00:52:08:root@mindphaser:davej)# lsmod | grep floppy
 > > (00:52:39:root@mindphaser:davej)# modprobe usb-uhci
 > > (00:52:48:root@mindphaser:davej)# lsmod | grep floppy
 > > (00:53:02:root@mindphaser:davej)# rmmod uhci_hcd
 > > (00:53:11:root@mindphaser:davej)# lsmod | grep floppy
 > > floppy                 58260  0
 > > (00:53:13:root@mindphaser:davej)#
 > > 
 > > Unloading the usb controller loads the floppy controller!?
 > 
 > That can't be right. You're loading usb-uhci, then unloading uhci_hcd.
 > 
 > You should have only have one, depending on the version of the kernel.

Err, yeah. ignore the modprobe part. uhci_hcd was already loaded during boot..

		Dave

Re: usb-uhci rmmod fun

[Dave Jones]

On Tue, Feb 24, 2004 at 06:00:01PM -0800, Greg KH wrote:

 > > Unloading the usb controller loads the floppy controller!?
 > Heh, I have no idea why that happens.  I can't duplicate that here.
 > What version of your hotplug scripts are you using?

the ones from Fedora Core 2 test 1 (2004_01_05-1)

 > What kernel version?

2.6.3-bk5

 > Do you have kmod enabled?

yep.

		Dave

Re: usb-uhci rmmod fun

[Sergey Vlasov]

On Wed, 25 Feb 2004 00:52:41 +0000 Dave Jones wrote:

> (00:52:08:root@mindphaser:davej)# lsmod | grep floppy
> (00:52:39:root@mindphaser:davej)# modprobe usb-uhci
> (00:52:48:root@mindphaser:davej)# lsmod | grep floppy
> (00:53:02:root@mindphaser:davej)# rmmod uhci_hcd
> (00:53:11:root@mindphaser:davej)# lsmod | grep floppy
> floppy                 58260  0
> (00:53:13:root@mindphaser:davej)#
> 
> Unloading the usb controller loads the floppy controller!?

This thing seems to be triggered by updfstab (/etc/hotplug/usb.agent
tries to run it during the remove handling).

Re: usb-uhci rmmod fun

[Dave Jones]

On Wed, Feb 25, 2004 at 07:33:43PM +0300, Sergey Vlasov wrote:
 > On Wed, 25 Feb 2004 00:52:41 +0000 Dave Jones wrote:
 > 
 > > (00:52:08:root@mindphaser:davej)# lsmod | grep floppy
 > > (00:52:39:root@mindphaser:davej)# modprobe usb-uhci
 > > (00:52:48:root@mindphaser:davej)# lsmod | grep floppy
 > > (00:53:02:root@mindphaser:davej)# rmmod uhci_hcd
 > > (00:53:11:root@mindphaser:davej)# lsmod | grep floppy
 > > floppy                 58260  0
 > > (00:53:13:root@mindphaser:davej)#
 > > 
 > > Unloading the usb controller loads the floppy controller!?
 > 
 > This thing seems to be triggered by updfstab (/etc/hotplug/usb.agent
 > tries to run it during the remove handling).

Bill Nottingham pointed out to me that on rmmod hotplug rescans
all removable media, which seems a bit wacky, but that does
seem to be the case.

		Dave