On Tue, 20 Aug 2013, Kevin Archer wrote: > DMESG log from CONFIG_DUMMY_IRQ per your instructions > > [ 8561.353244] ath9k: ath9k: Driver unloaded > [ 8627.529948] ehci-pci 0000:00:1a.0: remove, state 1 > [ 8627.529961] ehci-pci 0000:00:1a.0: roothub graceful disconnect > [ 8627.529973] usb usb1: USB disconnect, device number 1 > [ 8627.529979] usb 1-1: USB disconnect, device number 2 > [ 8627.529984] usb 1-1.1: USB disconnect, device number 3 > [ 8627.529988] usb 1-1.1: unregistering device > [ 8627.529994] usb 1-1.1: unregistering interface 1-1.1:1.0 > [ 8627.530101] usb 1-1.1: unlink qh1-0e01/ffff880241e95180 start 0 [1/3 us] > [ 8627.530110] ehci-pci 0000:00:1a.0: shutdown urb ffff88023f922600 ep1in-intr > [ 8627.559559] usbhid 1-1.1:1.0: removing 0 minor > [ 8627.560402] usb 1-1.1: usb_disable_device nuking all URBs > [ 8627.561008] usb 1-1.2: USB disconnect, device number 4 > [ 8627.561022] usb 1-1.2: unregistering device > [ 8627.561034] usb 1-1.2: unregistering interface 1-1.2:1.0 > [ 8627.561432] usb 1-1.2: unlink qh1-0e01/ffff88023fe57500 start 0 [1/2 us] > [ 8627.561456] ehci-pci 0000:00:1a.0: shutdown urb ffff880243aceb40 ep1in-intr > [ 8627.563903] ehci-pci 0000:00:1a.0: shutdown urb ffff880243ace6c0 ep2in-bulk > [ 8627.563918] ehci-pci 0000:00:1a.0: shutdown urb ffff880243ace9c0 ep2in-bulk > [ 8627.564084] usb 1-1: clear tt buffer port 2, a4 ep2 t04048d80 > [ 8627.566562] usb 1-1.2: unregistering interface 1-1.2:1.1 > [ 8627.566715] usb 1-1.2: usb_disable_device nuking all URBs > [ 8627.566993] usb 1-1.3: USB disconnect, device number 5 > [ 8627.567003] usb 1-1.3: unregistering device > [ 8627.567011] usb 1-1.3: unregistering interface 1-1.3:1.0 > [ 8627.615764] usb 1-1.3: unregistering interface 1-1.3:1.1 > [ 8627.615844] usb 1-1.3: usb_disable_device nuking all URBs > [ 8627.616210] usb 1-1: unregistering device > [ 8627.616219] usb 1-1: unregistering interface 1-1:1.0 > [ 8627.616303] usb 1-1: unlink qh256-0001/ffff88023fb6e280 start 1 [1/0 us] > [ 8627.616327] ehci-pci 0000:00:1a.0: shutdown urb ffff88023fe9a240 ep1in-intr > [ 8627.618111] usb 1-1: usb_disable_device nuking all URBs > [ 8627.618990] usb usb1: unregistering device > [ 8627.619001] usb usb1: unregistering interface 1-0:1.0 > [ 8627.619100] ehci-pci 0000:00:1a.0: shutdown urb ffff88023fc0a300 ep1in-intr > [ 8627.619230] usb usb1: usb_disable_device nuking all URBs > [ 8627.619873] ehci-pci 0000:00:1a.0: stop > [ 8627.620405] ehci-pci 0000:00:1a.0: reset command 0010002 (park)=0 > ithresh=1 period=1024 Reset HALT > [ 8627.624708] ehci-pci 0000:00:1a.0: irq normal 193 err 3 iaa 90 (lost 0) > [ 8627.624719] ehci-pci 0000:00:1a.0: complete 195 unlink 8 > [ 8627.624732] ehci-pci 0000:00:1a.0: ehci_stop completed status 1000 Halt > [ 8627.624760] ehci-pci 0000:00:1a.0: USB bus 1 deregistered > [ 8652.756509] dummy-irq: registered for IRQ 16 And nothing more? Hmmm... What shows up if you do just the modprobe dummy-irq step (skip the rmmod and echo steps)? In particular, do any more "irq 16: nobody cared" messages show up? If they don't, does loading the dummy-irq module cause your USB-2 devices to start working again? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
