Re: designs... (Re: [patch, attach, RFC] usb-serial: ti_usb removing firmware)

On Mon, Jan 29, 2007 at 11:52:07AM -0500, Alan Stern wrote:
> On Mon, 29 Jan 2007, Oleg Verych wrote:
> 
> > Maybe i'm wrong with fast solution proposing. I want them, because
> > it seems, that current binding of device (with IDs,#confs,#interfs) to
> > (USB interface) driver is done after guessing device's setup (default
> > is conf#1, interface#1, i think).
> 
> Probing and binding of the USB interface drivers is done while installing
> a device configuration, yes.  (Before a configuration is selected 
> there are no interfaces -- hence no need for interface drivers!)

Sure,

> However probing and binding of the USB device driver is done before
> installing the configuration.  In fact, it is the USB device driver's job
> to choose and install a configuration.  That's what "generic" does.

of course.

> > What if one-prupose device, like ti-usb-serial require its one operation
> > in different setup, and driver's author know it? I would like to have
> > such _option_, as device driver _have_ option to choose device it can
> > talk to -- ID tables.
> 
> You _do_ have the option -- you can call usb_driver_set_configuration().
> Alternatively, you can try to write a new USB device driver in place of 
> the "generic" one.  Or you can add special-case code to the 
> choose_configuration() routine in generic.c.

So, if i will quickly invent `wc' (working configuration ;) module
parameter for A driver, near vID:dID, i will not have any luck getting it
changed in USB-Core, before running USB interface specific stuff? There
must be Something pretty wrong.

____

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