linux-kernel - Re: [RESEND PATCH] arm: assabet_defconfig: disable IDE subsystem

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Date:	Mon, 18 Jul 2016 20:15:08 +0530
From:	Sekhar Nori <nsekhar@...com>
To:	Kevin Hilman <khilman@...libre.com>, Arnd Bergmann <arnd@...db.de>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Russell King <linux@....linux.org.uk>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	<linux-kernel@...r.kernel.org>, <linux-ide@...r.kernel.org>,
	Olof Johansson <olof@...om.net>
Subject: Re: [RESEND PATCH] arm: assabet_defconfig: disable IDE subsystem

On Friday 15 July 2016 08:45 PM, Kevin Hilman wrote:
> Arnd Bergmann <arnd@...db.de> writes:
> 
>> On Wednesday, July 13, 2016 12:59:23 PM CEST Bartlomiej Zolnierkiewicz wrote:
>>>
>>> On Friday, July 08, 2016 10:23:48 PM Arnd Bergmann wrote:
>>>> On Friday, July 8, 2016 5:24:41 PM CEST Bartlomiej Zolnierkiewicz wrote:
>>>>> This patch disables deprecated IDE subsystem in assabet_defconfig
>>>>> (no IDE host drivers are selected in this config so there is no
>>>>> valid reason to enable IDE subsystem itself).
>>>>>
>>>>> Cc: Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
>>>>> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
>>>>
>>>> I think the series makes a lot of sense. I have checked your assertions
>>>> in the changelogs and found no flaws in your logic, so I think we should
>>>> take them all through arm-soc unless there are other concerns.
>>>
>>> Thank you.
>>>
>>> Should I resend everything or just patches that were not reposted yet
>>> (the ones that were marked as RFT initially and got no feedback)?
>>
>> I'd be fine with just getting a pull request with all the patches that
>> had no negative feedback and that were not already applied (if any).
>>
>>>> Do you have a list of ARM defconfigs that keep using CONFIG_IDE and
>>>> how you determined that they need it?
>>>
>>> The only such defconfig is davinci_all_defconfig which uses
>>> palm_bk3710 host driver (CONFIG_BLK_DEV_PALMCHIP_BK3710).
>>>
>>>> I know that ARCH_RPC/ARCH_ACORN has a couple of special drivers that
>>>> have no libata replacement, are there any others like that, or are
>>>> they all platforms that should in theory work with libata but need
>>>> testing?
>>>
>>> All platforms except ARCH_ACORN, ARCH_DAVINCI & ARCH_RPC should work
>>> with libata.
>>
>> Adding Sekhar and Kevin for DaVinci: At first sight, palm_bk3710 looks
>> fairly straightforward (meaning someone has to do a few day's work)
>> to convert into a libata driver.
>>
>> As this is on on-chip controller that is part of a dm644x and dm646x,
>> it should also not be hard to test (as long as someone can find
>> a hard drive to plug in).
> 
> I have a hard drive, but don't have any dm64xx hardware anymore to test
> this.  My last working dm644x board died last year.

I have a working DM6446 EVM. I was able to connect a hard drive to it
and do some basic tests with v4.6 kernel.

I will look into converting the driver to libata. Might take some time
because this is unfamiliar territory for me.

Thanks,
Sekhar