linux-kernel - Re: [PATCH] ide-generic: skip automatic probing of legacy iobases (was: Re: [PATCH] ide-floppy fix)

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Date:	Sat, 2 Aug 2008 20:46:16 +0200
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	petkovbb@...il.com
Cc:	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: [PATCH] ide-generic: skip automatic probing of legacy iobases (was: Re: [PATCH] ide-floppy fix)

On Saturday 02 August 2008, Borislav Petkov wrote:
> On Sat, Aug 02, 2008 at 07:02:12PM +0200, Bartlomiej Zolnierkiewicz wrote:

[...]

> > > As a result, i have now a new bool-Kconfig option BLK_DEV_GENERIC_ONLY which
> > > gets reverse-selected only when no pci ide controller which is using the generic
> > > ide_host_register() from within ide_pci_init_one() is selected in Kconfig. This
> > > is tested both with and without a pci ide driver selected in addition to
> > > ide-generic.
> > 
> > How's about just leaving the final decision up to the user with changing
> > probe_mask in ide_generic from 0x3 to 0x0 and automatically probing for
> > ports 0-1 iff there is no IDE PCI controller present (otherwise check
> > probe_mask).
> 
> Wait, let me get this straight: you want to set probe_mask to 0x0 as a default,
> which skips probing of the primary and secondary ports, and to do the checking

Yes.

> whether the IDE PCI controller uses legacy iobases only when the user has
> enforced it by setting probe_mask to 0x3? At least this is how i understand
> it...

Nope, always do the checking and if there is no IDE PCI controller do the
probing (& if there is IDE PCI controller present check probe_mask bits).
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