linux-kernel - Re: [RFT PATCH] ia64: generic_defconfig: convert to use libata PATA drivers

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Message-ID: <55D2192A.2080803@cogentembedded.com>
Date:	Mon, 17 Aug 2015 20:26:02 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:	linux-ia64@...r.kernel.org, Tony Luck <tony.luck@...el.com>,
	Fenghua Yu <fenghua.yu@...el.com>, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFT PATCH] ia64: generic_defconfig: convert to use libata PATA
 drivers

On 08/17/2015 07:31 PM, Bartlomiej Zolnierkiewicz wrote:

>>> IDE subsystem has been deprecated since 2009 and the majority
>>> (if not all) of Linux distributions have switched to use
>>> libata for ATA support exclusively.  However there are still
>>> some users (mostly old or/and embedded non-x86 systems) that
>>> have not converted from using IDE subsystem to libata PATA
>>> drivers.  This doesn't seem to be good thing in the long-term
>>> for Linux as while there is less and less PATA systems left
>>> in use:
>>>
>>> * testing efforts are divided between two subsystems
>>>
>>> * having duplicate drivers for same hardware confuses users
>>>
>>> This patch converts generic_defconfig to use libata PATA
>>> drivers (sgiioc4 IDE host driver has no corresponding libata
>>> driver yet so it is not converted).
>>>
>>> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
[...]

>>> diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
>>> index 81f686d..f55be82 100644
>>> --- a/arch/ia64/configs/generic_defconfig
>>> +++ b/arch/ia64/configs/generic_defconfig
>> [...]
>>> @@ -62,6 +59,9 @@ CONFIG_SCSI_QLOGIC_1280=y
>>>    CONFIG_ATA=y
>>>    CONFIG_ATA_PIIX=y
>>>    CONFIG_SATA_VITESSE=y
>>> +CONFIG_PATA_CMD64X=y
>>> +CONFIG_PATA_MPIIX=y

>>      If you're enabling the MPIIX support (which I doubt is necessary), why not

> I also doubt that it is necessary but IDE's piix host driver
> includes support for it

    Borked. :-)

> (so after conversion MPIIX is also enabled).

    MPIIX was for laptops only, IIUC.

>> enable the "old" PIIX support?

> Oversight on my side, will fix.

> Best regards,
> --
> Bartlomiej Zolnierkiewicz
> Samsung R&D Institute Poland
> Samsung Electronics

MBR, Sergei

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