Comment 49 for bug 296710

This bug wasn't fixed yet in 2.6.28-2-rt

$ dmesg | grep _hcd
[ 4.395576] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 4.395977] ohci_hcd 0000:00:02.0: PCI INT A -> Link[APCF] -> GSI 22 (level, low) -> IRQ 22
[ 4.395999] ohci_hcd 0000:00:02.0: setting latency timer to 64
[ 4.396023] ohci_hcd 0000:00:02.0: OHCI Host Controller
[ 4.396119] ohci_hcd 0000:00:02.0: new USB bus registered, assigned bus number 1
[ 4.398042] ohci_hcd 0000:00:02.0: irq 22, io mem 0xc6003000
[ 4.405023] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 4.405028] Warning! ehci_hcd should always be loaded before uhci_hcd and ohci_hcd, not after
[ 4.452311] ehci_hcd 0000:00:02.1: PCI INT B -> Link[APCL] -> GSI 21 (level, low) -> IRQ 21
[ 4.452369] ehci_hcd 0000:00:02.1: setting latency timer to 64
[ 4.452371] ehci_hcd 0000:00:02.1: EHCI Host Controller
[ 4.452468] ehci_hcd 0000:00:02.1: new USB bus registered, assigned bus number 2
[ 4.452496] ehci_hcd 0000:00:02.1: debug port 1
[ 4.452499] ehci_hcd 0000:00:02.1: cache line size of 64 is not supported
[ 4.464236] ehci_hcd 0000:00:02.1: irq 21, io mem 0xfeb00000
[ 4.470024] ehci_hcd 0000:00:02.1: USB 2.0 started, EHCI 1.00
[ 5.085025] usb 1-2: new low speed USB device using ohci_hcd and address 2
[ 5.701031] usb 1-7: new full speed USB device using ohci_hcd and address 3
[ 6.203053] usb 1-7.1: new low speed USB device using ohci_hcd and address 4
[ 6.407047] usb 1-7.4: new low speed USB device using ohci_hcd and address 5