From mboxrd@z Thu Jan  1 00:00:00 1970
From: Greg KH <greg@kroah.com>
Subject: Re: Problem with non aligned DMA in usbnet on ARM
Date: Wed, 11 Aug 2010 08:04:43 -0700
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Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>,
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To: Martin Fuzzey <mfuzzey@gmail.com>
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On Wed, Aug 11, 2010 at 12:11:52PM +0200, Martin Fuzzey wrote:
> > You haven't said what HCD you're using.
> >
> imx21_hcd  (submitted by me and mainlined in 2.6.34)
> 
> > In that case, I'd say the HCD must handle misaligned URBs itself so
> > behaviour is consistent between all implementations on different
> > platforms.
> >
> Here is a pointer to the thread where it was stated that HCD's don't
> have to handle this.
> 
> http://kerneltrap.org/mailarchive/linux-usb/2009/4/20/5528164

No, that thread is about stack vs. heap allocations, not about alignment
issues.

thanks,

greg k-h