Bug 9097

Summary:	rndis_host claiming PocketPC and not releasing it
Product:	Drivers	Reporter:	Paul Lemmons (paul.lemmons)
Component:	USB	Assignee:	Greg Kroah-Hartman (greg)
Status:	REJECTED INVALID
Severity:	normal
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.22.7-85.fc7	Subsystem:
Regression:	---	Bisected commit-id:

Description Paul Lemmons 2007-09-28 10:45:22 UTC

Most recent kernel where this bug did not occur: 2.6.22.7-85
Distribution: Fedora 7, Gentoo and probably others
Hardware Environment: Intel
Software Environment: KDE
Problem Description:

I use VMware v5 and active sync under a virtual Windows session. Prior to 2.6.21 kernel there was never a problem. Now, It occasionally works but most of the time it fails. 

When I connect my PDA (Dell Axim) I see the following in dmesg:

usb 4-1: new full speed USB device using uhci_hcd and address 2
usb 4-1: configuration #1 chosen from 1 choice
usbcore: registered new interface driver cdc_ether
eth2: register 'rndis_host' at usb-0000:00:1d.3-1, RNDIS device, 80:00:60:0f:e8:00
usbcore: registered new interface driver rndis_host
usb 4-1: USB disconnect, address 2

on my VMWare session I get a dialog that says:

The specified device appears to be claimed by another driver (rndis_host) on the host operating system which means that the device may be in use. To continue, the device will first be disconnected from its current driver.

Pressing OK does not have a positive effect.

I have read bug: 8094 and it may or may not apply. I am not getting the oops. 

A post on the VMWare forum has more detailed information form others experiencing the same problem. 

http://communities.vmware.com/message/759604


Steps to reproduce:

1) Connect PDA (PocketPC/Windows Mobile 5)
2) See message appear on VMWare session

Comment 1 Greg Kroah-Hartman 2007-09-28 11:03:44 UTC

This is not a Linux kernel issue, vmware knows how to properly disconnect a device from a driver, they just need to do it in the correct manner.

I suggest you take this up with them.

Comment 2 Stephen J. Gowdy 2008-04-11 01:08:30 UTC

Could this be due to a different structure in /sys/bus/usb/devices/? Did it previously use <bus>-<device> and now it is <bus>-<port>.<port>, or was it always the later?