Merge 3.9-rc4 into usb-next

This picks up the fixes we had for USB in 3.9-rc4

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/usb/class/cdc-acm.c
Simple merge

diff --cc drivers/usb/serial/mos7840.c
Simple merge

diff --cc drivers/usb/serial/quatech2.c
Simple merge

diff --cc drivers/usb/serial/usb-serial.c
Simple merge