Re: [PATCH] usb: serial: ftdi_sio: option to hide selected interfaces of multiple interfaces convertes

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On Fri, Sep 14, 2012 at 02:06:52PM +0000, Robert Ryszard Paciorek wrote:
> Hi,
> 
> Dnia Friday 14 September 2012 13:43, Alan Stern napisał:
> > On Fri, 14 Sep 2012, Robert Ryszard Paciorek wrote:
> > > Add parametrs to hide some of converter interfaces against ftdi_sio
> > > driver. This allows on multiple-interfaces converter (such as ft2232,
> > > ft4232) use uart with kernel driver and use e.g. I2C or SPI (on other
> > > interface) with libusb or other kernel-driver.
> >
> > Using a module parameter for this sort of thing is generally a bad
> > idea.
> 
> I was thinking about use sysfs, but module parameter working nice while 
> booting system and load different drivers (e.g. autodecect other module for 
> ignoring interfaces).
> 
> > What will happen if there are several FTDI devices plugged in? 
> > You might want to ignore the interfaces on some of them but not on
> > others.
> 
> Patch add second parametr, who determinate "USB product name" of device,
> whose interfaces we want to ignore.

No, sorry, no new module parameters, I'm trying to delete them wherever
possible.

And this really will not work, you want to be able to handle hundreds of
devices at the same time, with the same driver.  A module parameter will
not work there.

greg k-h
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