linux-kernel - Re: [2.6 patch] HID: fix default building of all quirky devices

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Date:	Wed, 15 Oct 2008 10:17:27 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Jiri Kosina <jkosina@...e.cz>
cc:	Adrian Bunk <bunk@...nel.org>, zippel@...ux-m68k.org,
	sam@...nborg.org, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org, Jiri Slaby <jirislaby@...il.com>,
	Mauro Carvalho Chehab <mchehab@...hat.com>
Subject: Re: [2.6 patch] HID: fix default building of all quirky devices



On Wed, 15 Oct 2008, Linus Torvalds wrote:
> 
> And notice how you mis-use select. That's not how to disable a question. A 
> question gets disabled by just doing an "if xyz" on the question itself, 
> like Adrian did.

Side note: Adrian too has a very odd and non-obvious way of doing this.

His patch did config entries like

	config HID_BRIGHT
		tristate "Bright" if EMBEDDED
		default USB_HID
		depends on USB_HID

which is a really odd way to express this. The much more natural one is

	config HID_BRIGHT
		tristate "Bright" if EMBEDDED
		depends on USB_HID
		default y

since there's no point in saying "default USB_HID" + "depends on USB_HID", 
and that's just confusing. Since it depends on USB_HID, the "default y" 
will automatically degrade to whatever USB_HID was set to.

			Linus
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