linux-kernel - Re: [PATCH 2/3] libata: use ->proto

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Date:	Sat, 14 Jul 2007 09:56:38 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	linux-ide@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] libata: use ->proto_mask in drivers

On Sat, 14 Jul 2007 04:17:28 -0400
Jeff Garzik <jeff@...zik.org> wrote:

> 
> Review definitely helps here...

Without knowing what the precise semantics are that is hard. Every
SFF_DMA case may not be supporting DMA depending upon the configuration
so it should probably be set by ata_pci_init_one for all the normal SFF
devices.

Thus I would say
- Drop every user of ata_pci_init_one from the patch

in ata_pci_init_one set it to SFF
in ata_pci_init_bmdma set it to SFF + DMA on success

and while we are at it this would nicely fix your TODO in
ata_pci_init_bmdma by testing the class when copying the modes over.

Alan
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