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

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Message-ID: <4780C728.1030806@s5r6.in-berlin.de>
Date:	Sun, 06 Jan 2008 13:18:48 +0100
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Adrian Bunk <bunk@...nel.org>
CC:	Randy Dunlap <randy.dunlap@...cle.com>,
	Sam Ravnborg <sam@...nborg.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

Adrian Bunk wrote:
> On Sun, Jan 06, 2008 at 01:35:21AM +0100, Stefan Richter wrote:
>> Adrian Bunk wrote:
>>> Whether or not an option requires an additional subsystem like e.g. SCSI 
>>> or SSB are hardware and implementation details we shouldn't bother 
>>> kconfig users with.
>> What is an implementation detail and what is not?  In the end,
>> everything that we configure in Kconfig is implementation details.
> 
> With the use case "system administrator" we can expect people to know 
> the name of their ethernet card and which filesystems they use, but we 
> should not bother them with the fact that their network card might 
> require the Sonics Silicon Backplane support.

I'm afraid this can't be put into practice.  (User says which hardware
and protocols he needs to be supported, scripts magically assemble a
suitable configuration.)

I think
  - sensibly modularize our software,
  - tell the user which software components there are,
  - what they are for,
  - how they depend on each other,
  - make it easy enough for the user to navigate in the dependency
    graph,
  - provide fundamental safeguards and checks for a proper software
    configuration
is the best we can do.
-- 
Stefan Richter
-=====-==--- ---= --==-
http://arcgraph.de/sr/
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