linux-kernel - Re: [PATCH 21/20] ata_piix: add new PIIX_FLAG

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Date:	Tue, 08 Feb 2011 21:30:20 +0300
From:	Sergei Shtylyov <sshtylyov@...sta.com>
To:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
CC:	Sergei Shtylyov <sshtylyov@...sta.com>, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH 21/20] ata_piix: add new PIIX_FLAG_* flags

Bartlomiej Zolnierkiewicz wrote:

>>> Turn open-coded checks in piix_set_timings() into PIIX_FLAG_* flags
>>> per suggestion from Alan Cox.
>>> Suggested-by: Alan Cox <alan@...rguk.ukuu.org.uk>
>>> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
>> [...]

>>> Index: b/drivers/ata/ata_piix.c
>>> ===================================================================
>>> --- a/drivers/ata/ata_piix.c
>>> +++ b/drivers/ata/ata_piix.c
>>> @@ -133,6 +133,8 @@ enum {
>>>        PIIX_FLAG_CHECKINTR     = (1 << 28), /* make sure PCI INTx enabled
>>> */
>>>        PIIX_FLAG_SIDPR         = (1 << 29), /* SATA idx/data pair regs */
>>> +       PIIX_FLAG_NO_SITRE      = (1 << 30), /* no SITRE register */

>>   The register in question is called SIDETIM, SITRE is a bit that enables
>> its use.

> ICH4-M databook that I have at hand (Intel IDE PRM seems to be gone
> from Intel's website, though I'm sure I have a backup _somewhere_) it
> is called SLV_IDETIM so lets just stick with the current naming for
> now..

    Why not just say that SITRE is a bit, not register? :-)

> Thanks,
> Bartlomiej

WBR, Sergei
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