linux-kernel - Re: why does x86 "make defconfig" build a single, lonely module?

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Date:	Mon, 14 May 2007 19:46:14 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
Cc:	James Bottomley <James.Bottomley@...elEye.com>,
	Simon Arlott <simon@...e.lp0.eu>,
	"Robert P. J. Day" <rpjday@...dspring.com>,
	Dave Jones <davej@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-scsi@...r.kernel.org
Subject: Re: why does x86 "make defconfig" build a single, lonely module?

On Mon, 14 May 2007 19:29:12 +0200 (MEST)
Jan Engelhardt <jengelh@...ux01.gwdg.de> wrote:

> 
> On May 13 2007 12:48, James Bottomley wrote:
> >
> >> Why does ATA select SCSI anyway? Surely PATA doesn't require it?
> >
> >That's a bit offtopic and to the wrong list.
> >
> >libata-pata does require SCSI ...
> 
> And in the long run, that SCSI parts which are actually used by ATA
> should be factored out so that SCSI really is SCSI again, and not
> "Common layer for SCSI, SATA and PATA" or so.

The common layer for the queueing is one thing, but the ATAPI devices
(CD-ROM etc) are SCSI commands over an ATA bus. A subset of SCSI commands
badly over an ATA bus but SCSI commands nevertheless - so they have the
same basic dependancies as USB storage does.

Alan
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