Re: Bug: VHCI + USB 3.0

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On Wed, 10 Apr 2019, Oliver Neukum wrote:

> On Di, 2019-04-09 at 15:57 -0400, Alan Stern wrote:
> > On Tue, 9 Apr 2019, Bollinger, Seth wrote:
> > 
> > > I will do that as a test.  However, I’m concerned that we’re solving only a specific case.  Won’t it fail in a similar way if a different subsystem does the same thing (USB modem or video drivers, etc.)?
> > 
> > Those other drivers don't use the block device interface, as far as I 
> > know.  So they would have to use other methods for addressing the 
> > potential problems in any case.  usb-storage is perhaps distinct in 
> > that it doesn't generate the scatter-gather lists that it uses, but 
> > instead has to work with whatever the block layer provides.
> 
> UAS, too. But I can pick up the corresponding fix.
> Are you sure about sound though?

Yes; I just did a quick check for occurrences of "blk_queue" under 
sound/.

Besides, sound drivers use the ALSA interface to userspace.  The 
devices don't show up as regular block devices.

Alan Stern




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