Re: USB transfer_buffer allocations on 64bit systems

[Pedro Ribeiro]

On 14 April 2010 22:01, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
> 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).
>

I can also trigger the bug on mount and unmount of a USB stick, albeit
its not as intensive.

Pedro
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