linux-kernel - Re: [PATCH 1/3] libata: pass host flags into __ata_pci_sff_init

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Message-ID: <20100218214448.692552fd@lxorguk.ukuu.org.uk>
Date:	Thu, 18 Feb 2010 21:44:48 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Cc:	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] libata: pass host flags into
 __ata_pci_sff_init_one() helper

On Thu, 18 Feb 2010 19:59:22 +0100
Bartlomiej Zolnierkiewicz <bzolnier@...il.com> wrote:

> From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
> Subject: [PATCH] libata: pass host flags into __ata_pci_sff_init_one() helper
> 
> This was orginally proposed by Alan Cox but as a change
> for ata_pci_sff_init_one() helper function instead of
> __ata_pci_sff_init_one() one which casues needless churn
> to all host drivers and accidentally breakes few host
> drivers which are still on their way upstream.
> 
> Allows parallel scan and the like to be set without
> having to stop using the existing full helper functions.

NAK - __ is for internal symbol names.

I was split 50/50 on adding ata_pci_sff_init_one_flags() or similar but
the churn, given its a one off and we can then add all sorts of other
future flags without pain, seemed worth it.

I'm ambivalent about whether its best to go with a new function name as
you have or take the hit now (which seems sensible to me). Either way the
__ naming is wrong for an external interface.

Anyway I'd *hope* we can get > 50% of interfaces parallel scanning at
which point it ceases to be more noise anyway !

Jeff ?
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