tree f2a85612ca46f1c9f533500ad587d12d5a9b64b0
parent 40ff16248e5a7a699386ed8b7ef462af9b8af3fa
author Jason Wessel <jason.wessel@windriver.com> 1242658828 -0500
committer Anthony Liguori <aliguori@us.ibm.com> 1243007435 -0500

USB serial device support

Add in a workaround to allow the usb serial devices to work with the
usb pass through mechanism.  The ioctl() to request an alternate
interface will always return < 0 for a usb-serial device based on the
kernel driver.  This means there is no alternate interface end point.

This was fully tested with a pl2303 usb serial device.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>