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

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Message-Id: <201004080812.04419.oliver@neukum.org>
Date:	Thu, 8 Apr 2010 08:12:04 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Daniel Mack <daniel@...aq.de>, linux-kernel@...r.kernel.org,
	Pedro Ribeiro <pedrib@...il.com>, akpm@...ux-foundation.org,
	Greg KH <gregkh@...e.de>, alsa-devel@...a-project.org,
	linux-usb@...r.kernel.org
Subject: Re: USB transfer_buffer allocations on 64bit systems

Am Mittwoch, 7. April 2010 17:46:17 schrieb Alan Stern:
> Or alternatively, instead of allocating regular memory the routine
> could simply fail.  Then the caller would be responsible for checking
> and using regular memory instead of dma-consistent memory.  Of course,
> that would put an even larger burden on the caller than just forcing it
> to keep track of what flag to use.

Then it would be sensible to pass it a filled URB, modify it or return
an error code.

	Regards
		Oliver
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