From: Greg KH <greg@kroah.com>
To: Ed Tomlinson <edt@aei.ca>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [USB spamming log] with 3.16-rc (git) my pl2303 is spaming my logs
Date: Sat, 5 Jul 2014 11:02:06 -0700 [thread overview]
Message-ID: <20140705180206.GA828@kroah.com> (raw)
In-Reply-To: <4878627.a0D3mPHSVv@grover>
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
next prev parent reply other threads:[~2014-07-05 17:57 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-04 7:37 usb: gadget: net2280: CONFIG_USB_GADGET_PDEBUG_FILES? Paul Bolle
2014-07-04 9:27 ` Ricardo Ribalda Delgado
2014-07-05 14:55 ` [USB spamming log] with 3.16-rc (git) my pl2303 is spaming my logs Ed Tomlinson
2014-07-05 18:02 ` Greg KH [this message]
2014-07-06 1:42 ` Ed Tomlinson
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