https://bugzilla.kernel.org/show_bug.cgi?id=46201 I have a device that uses a FTDI USB-to-serial chip identified by lsusb as: Bus 001 Device 051: ID 0403:6014 Future Technology Devices International, Ltd Only recently, within 24 hours, it will error like this, at which point the FTDI driver becomes unusable, even for other devices: Aug 18 13:24:07 [kernel] ftdi_sio ttyUSB2: error from flowcontrol urb Aug 18 13:24:12 [kernel] ftdi_sio ttyUSB2: ftdi_set_termios urb failed to set baudrate Aug 18 13:24:12 [kernel] ftdi_sio ttyUSB2: urb failed to clear flow control - Last output repeated 379 times - Aug 18 19:58:16 [kernel] ftdi_sio ttyUSB2: error from flowcontrol urb This has worked fine for months, even for a week after I upgraded to 3.4.4, so there's probably some hardware trouble going on(?), but it probably shouldn't mess up the driver like this. Also worth mentioning: the RMA replacement unit I have also exhibits this same problem, but neither of them do if I connect the same devices to an old Ubuntu netbook (2.6.32-41-generic). -- 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
