linux-kernel - Re: [PATCH 04/22] ide: add ide_deprecated_find

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Date:	Wed, 21 May 2008 18:29:56 +0400
From:	Sergei Shtylyov <sshtylyov@...mvista.com>
To:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Cc:	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 04/22] ide: add ide_deprecated_find_port() helper

Hello.

Bartlomiej Zolnierkiewicz wrote:

> * Factor out code for finding ide_hwifs[] slot from ide_register_hw()
>   to ide_deprecated_find_port().

> * Convert bast-ide, ide-cs and delkin_cb host drivers to use ide_device_add()
>   instead of ide_register_hw() (while at it drop doing "ide_unregister()" loop
>   which tries to unregister _all_ IDE interfaces if useable ide_hwifs[] slot
>   cannot be find).

    Er... this patch didn't actually drop that loop (late remark :-).

> This patch leaves us with only two ide_register_hw() users:
> - drivers/macintosh/mediabay.c
> - drivers/ide/ide.c

    I wonder whether ide_register_hw() was much good at all since it didn't 
actually permit to register chips using MMIO: you couldn't pass that info via 
'hw' and it set 'hwif->noprobe' to 0, thus giving you no chance to skip 
probing which wouldn't work anyway; for the same reason it was no good for DMA 
capable chips since you had not time to install ide_dma_check() and other DMA 
methods. Am I right here?

MBR, Sergei
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