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Date: Sat, 5 Jul 2014 11:02:06 -0700 From: Greg KH <greg@...ah.com> To: Ed Tomlinson <edt@....ca> Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [USB spamming log] with 3.16-rc (git) my pl2303 is spaming my logs 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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