Hi Greg, On 06/05/2013 07:54 PM, Greg KH wrote: > Here are 3 patches that I've tested out on my system with only a small > number of devices, but it seems to work, so why not let others try it > out... It compiles and runs without any errors. My current setup has 272 ftdi devices connected: rescue on 172.18.24.141:/dev$ uname -a Linux bigrescue 3.10.0-rc3+ #1 SMP Thu Jun 6 12:21:06 CEST 2013 x86_64 GNU/Linux rescue on 172.18.24.141:/dev$ dmesg | tail -n 15 [ 3361.898725] usb 3-1.4.4: usb_probe_device [ 3361.898750] usb 3-1.4.4: configuration #1 chosen from 1 choice [ 3361.901598] usb 3-1.4.4: adding 3-1.4.4:1.0 (config #1, interface 0) [ 3361.906802] ftdi_sio 3-1.4.4:1.0: usb_probe_interface [ 3361.906830] ftdi_sio 3-1.4.4:1.0: usb_probe_interface - got id [ 3361.906875] ftdi_sio 3-1.4.4:1.0: FTDI USB Serial Device converter detected [ 3361.932490] usb 3-1.4.4: Detected FT232RL [ 3361.952189] usb 3-1.4.4: Number of endpoints 2 [ 3361.972791] usb 3-1.4.4: Endpoint 1 MaxPacketSize 64 [ 3361.994656] usb 3-1.4.4: Endpoint 2 MaxPacketSize 64 [ 3362.016309] usb 3-1.4.4: Setting MaxPacketSize 64 [ 3362.039764] usb 3-1.4.4: FTDI USB Serial Device converter now attached to ttyUSB271 [ 3362.075248] hub 3-1.2:1.0: state 7 ports 4 chg 0000 evt 0010 [ 3362.075676] hub 3-1.3:1.0: state 7 ports 4 chg 0000 evt 0010 [ 3362.076659] hub 3-1.4:1.0: state 7 ports 4 chg 0000 evt 0010 Sadly I only have FTDI single port interfaces and am therefore unable to test with other devices. Thanks for the effort! Tobias -- 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