linux-kernel - Re: [PATCH 2/5] USB Kconfig: Select SCSI for USB Mass Storage support

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Message-ID: <4780C15C.2000904@s5r6.in-berlin.de>
Date:	Sun, 06 Jan 2008 12:54:04 +0100
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Randy Dunlap <randy.dunlap@...cle.com>
CC:	Sam Ravnborg <sam@...nborg.org>, Adrian Bunk <bunk@...nel.org>,
	Al Boldi <a1426z@...ab.com>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, David Brownell <david-b@...bell.net>,
	Greg KH <greg@...ah.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 2/5] USB Kconfig: Select SCSI for USB Mass Storage support

Randy Dunlap wrote:
> Sam Ravnborg wrote:
>> On Sat, Jan 05, 2008 at 11:03:30PM +0200, Adrian Bunk wrote:
>>> For kconfig users, "select" is _much_ better than sending them
>>> through different menus.
>> Only if used within the current limitations of Kconfig.
>> And that requires you to use select only to select symbols with
>> no dependencies.
> 
> Right.  One of the main (or maybe even the only) problem(s) is
> that select does not follow dependency chains.
> and that no one works on that problem.
> 
>> In this case we do not know if BLOCK is enabled or not.
> 
> For Aunt Tillie cases, "select" makes sense.  For other cases,
> I'd argue that it makes sense for config users to know when they
> do something that causes an entire subsystem to be added to their
> kernel (like SCSI or NET).

Besides the issue of additional potentially unsatisfied dependencies and
the issue of things being enabled behind the user's back --- there is
another issue which Adrian and Al ignore:

The user who wants to enable usb-storage /has/ to go into the SCSI menu
anyway to answer whether he needs sd, sr, st, sg, command logging...
-- 
Stefan Richter
-=====-==--- ---= --==-
http://arcgraph.de/sr/
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