On Sat, Jul 05, 2014 at 10:55:57AM -0400, Ed Tomlinson wrote:
> Hi
>
> I have a raspberry PI sending its console to my box via a pl2303
What exact pl2303 is this? Can you provide the output from 'lsusb'?
> [ 5.184385] usbserial: USB Serial support registered for pl2303
> [ 5.184398] pl2303 1-2.6:1.0: pl2303 converter detected
> [ 5.185353] usb 1-2.6: pl2303 converter now attached to ttyUSB0
>
> and with the latest fixes from git on 3.16 its now started spamming my logs
> with:
>
> [55507.155354] pl2303 ttyUSB0: usb_serial_generic_read_bulk_callback -
> nonzero urb status: -71
> [55510.736558] pl2303 ttyUSB0: usb_serial_generic_read_bulk_callback -
> nonzero urb status: -71
> [55517.238586] pl2303 ttyUSB0: usb_serial_generic_read_bulk_callback -
> nonzero urb status: -71
> [55521.099938] pl2303 ttyUSB0: usb_serial_generic_read_bulk_callback -
> nonzero urb status: -71
> [55521.778520] pl2303 ttyUSB0: usb_serial_generic_read_bulk_callback -
> nonzero urb status: -71
> [55523.229808] pl2303 ttyUSB0: usb_serial_generic_read_bulk_callback -
> nonzero urb status: -71
> [55523.229846] pl2303 ttyUSB0: usb_serial_generic_read_bulk_callback -
> nonzero urb status: -71
> [55525.074519] pl2303 ttyUSB0: usb_serial_generic_read_bulk_callback -
> nonzero urb status: -71
> [55527.270207] pl2303 ttyUSB0: usb_serial_generic_read_bulk_callback -
> nonzero urb status: -71
That's saying there was one of the following errors in this device:
a) bitstuff error
b) no response packet received within the prescribed bus turn-around
time
c) unknown USB error
All of which point to either a problem in the USB host controller, or
the usb device itself.
Is this an "unpatched" 3.16-rc kernel running on the rpi? If so, odds
are it's a host controller issue...
thanks,
greg k-h
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