On Tue, 13 Apr 2004, Duncan Sands wrote:
> proc_setintf contains the following line:
>
> if (interface->dev.driver) {
>
> Doesn't that mean that a lock needs to be
> taken to protect against a change in the driver?
Yes it does. As discussed recently on this list, the usb bus subsystem
rwsem is the appropriate lock.
On a totally separate topic:
Have you made any headway trying to decipher the VIA UHCI filter driver?
I think the one you were looking at must have been their USB-1.1 driver;
maybe it would be better to examine the USB-2.0 driver, which is the one
that would be installed for a VT6202. That chip makes a good prototype
example, even though it's a little old now, of the UHCI halt-on-babble
problem.
So far technical support at VIA has been completely nonresponsive to
requests for help.
Alan Stern
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