linux-kernel - Re: USB transfer_buffer allocations on 64bit systems

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Message-ID: <Pine.LNX.4.44L0.1004081416560.1720-100000@iolanthe.rowland.org>
Date:	Thu, 8 Apr 2010 14:17:41 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Pedro Ribeiro <pedrib@...il.com>
cc:	Daniel Mack <daniel@...aq.de>,
	Robert Hancock <hancockrwd@...il.com>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg KH <gregkh@...e.de>, USB list <linux-usb@...r.kernel.org>
Subject: Re: USB transfer_buffer allocations on 64bit systems

On Thu, 8 Apr 2010, Pedro Ribeiro wrote:

> > Pedro, in the hope of tracking down the problem, can you apply this
> > patch and see what output it produces in the system log when the
> > "interference" happens?  (Warning: It will produce quite a lot of
> > output whenever you send data to the audio device -- between 500 and
> > 1000 lines per second.)

> I'll do it tonight and send you the results tomorrow morning. Do you
> want CONFIG_USB_DEBUG enabled or disabled?

It doesn't matter.

Alan Stern

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