On Mon, 6 Jul 2009, Peter Naulls wrote: > Ok, using that patch against 2.6.31-rc2, but look at this after reboot: > > > sierra 1-3:1.0: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB0 > sierra 1-3:1.1: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB1 > sierra 1-3:1.2: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB2 > sierra 1-3:1.3: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB3 > sierra 1-3:1.4: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB4 > sierra 1-3:1.5: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB5 > sierra 1-3:1.6: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB6 > > [ Unplug, devices vanish ] > > sierra 1-3:1.0: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB0 > sierra 1-3:1.1: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB1 > sierra 1-3:1.2: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB2 > sierra 1-3:1.3: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB4 > sierra 1-3:1.4: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB5 > sierra 1-3:1.5: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB6 > sierra 1-3:1.6: Sierra USB modem converter detected > usb 1-3: Sierra USB modem converter now attached to ttyUSB7 > > ttyUSB3 is now missing, which was the device I was trying to use. This is correct behavior, isn't it? Your program is still running and still holding ttyUSB3 open, so that same minor number can't be used for a new device node. 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