[Bug 50757] uhci_hcd generates flood of kernel messages while failing to mount usb stick

[Fabian Mueller]

Public bug reported:

When connecting my usb stick to the computer, it is not automatically
discovered anymore. Even 'lsusb -v' does not show anything beside the
usb hub.

Instead, 'cat /proc/kmsg' produces messages like

[17180190.832000] usb 1-2: new full speed USB device using uhci_hcd and address 5
[17180191.336000] usb 1-2: new full speed USB device using uhci_hcd and address 6
[17180191.840000] usb 1-2: new full speed USB device using uhci_hcd and address 7
[17180192.344000] usb 1-2: new full speed USB device using uhci_hcd and address 8
[17180192.848000] usb 1-2: new full speed USB device using uhci_hcd and address 9

and so on, about two messages per second. The address numbers go up till
127 and then start again at 0.

The problem is obviously related to uhci_hcd.ko, since removing it stops
the messages (and reloading it starts them again).

I have this bug for 2 days now, the last time I used the stick was about
two weeks ago, when everything was functioning properly. I had already
migrated to dapper then, so it must be some issue with the last two
weeks' updates.

I have been able to resolve the problem once by inserting and removing
various modules like sd_mod, ehci_hcd, uhci_hcd, usb_storage, but I
haven't been able to reproduce it :-/

Loading sd_mod, by the way, gives the following error message:

Driver 'sd' needs updating - please use bus_type methods

but it loads nonetheless.

Any help would be appreciated!

** Affects: linux-source-2.6.12 (Ubuntu)
     Importance: Untriaged
         Status: Unconfirmed

** Attachment added: "output of dmesg"
   http://librarian.launchpad.net/3140216/dmesg.txt

-- 
uhci_hcd generates flood of kernel messages while failing to mount usb stick
https://launchpad.net/bugs/50757