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Date: Fri, 21 Dec 2007 22:19:19 -0800
From: David Brownell <david-b@pacbell.net>
To: jengelh@computergmbh.de, a1426z@gawab.com
Subject: Re: [RFC] USB Kconfig: Declutter USB Kconfig Menu
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, greg@kroah.com
References: <200712211630.03426.a1426z@gawab.com>
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 <20071221235854.DF7931915EF@adsl-69-226-248-13.dsl.pltn13.pacbell.net>
 <200712220806.24730.a1426z@gawab.com>
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> > Notice that this whole menu is for "Host-side USB", except for that
> > gadget stuff.  That might usefully be labeled as "Peripheral-side USB".
> >
> > For that matter, it could be moved up a level in the menu, so the top
> > level driver menu has two USB entries:  Host side, and Peripheral side.
>
> Actually, when you disable Host-side USB support, the menu looks like this:
>
> ┌───────────???──────────────────???──────────────────???───────────────┐
> │ --- USB support                                                 │
> │ < >   Support for Host-side USB  --->                           │
> │       USB Gadget Support  --->                                  │
> │                                                                 │

Right, that's what I said.   It makes the gadget stuff needlessly hard
to find, as well as being less clear about what a "gadget" is than it
really should be.


> I think renaming 'USB Gadget Support' to 'Support for Peripheral-side USB' is 
> probably a good idea.

Only for displaying in its topmost menu...


> > The driver stacks are independent of each other, except for common data
> > structures like what's in the <linux/usb/ch9.h> header file.  I think
> > there's no real point, other than history, to having both sides share
> > the same menu.
>
> They aren't.

How can you say that, when you showed (right above!!) that they are???
Sure, there are submenus too.  But they're clearly in the same menu.


>	USB Gadget Support is in its own sub-menu.  And strictly 
> speaking, Host-side USB should be too, but some people may feel that this 
> would be nesting it too deep, and so it unfolds in the same menu.

Which is why my suggestion was to have them both move up a level, with
host and peripheral side menus nested normally:

	Device Drivers:
		...
		[ ] HID devices
		< > Host side USB
		< > Peripheral side USB
		< > MMC/SD/SDIO card support
		[ ] LED support
		...

That way both host and peripheral side support would have their own
menu, and that pointless nesting would be reduced.

- Dave

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