Re: USB transfer_buffer allocations on 64bit systems

[Konrad Rzeszutek Wilk]

On Wed, Apr 14, 2010 at 04:29:22PM -0400, Alan Stern wrote:
> On Wed, 14 Apr 2010, Chris Wright wrote:
> 
> > So dma_map_single is the case that's failing, but you think the mask is
> > correct?  What about the direction?
> 
> The mask and direction are unquestionably correct.  The mask is set up 
> by pci_setup_device() and not changed thereafter.  Furthermore, the 
> audio works okay until another device (a DVB tuner) is plugged in.  

Could the driver for the DVB tuner change the PCI mask? That is, change
the pci mask way after it has been initialized (don't laugh, this did
happend - as I remember 4 months fix was posted on the DRM mailing list
for this).
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