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

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Date:   Mon, 12 Dec 2016 19:24:47 +0530
From:   Sekhar Nori <nsekhar@...com>
To:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
CC:     Kevin Hilman <khilman@...libre.com>, Arnd Bergmann <arnd@...db.de>,
        <linux-arm-kernel@...ts.infradead.org>,
        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

Hi Bartlomiej,

On Monday 12 December 2016 06:15 PM, Bartlomiej Zolnierkiewicz wrote:
> 
> Hi,
> 
> On Monday, July 18, 2016 08:15:08 PM Sekhar Nori wrote:
>> 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.
> 
> Do you need some help with it?
> 
> I can provide you with draft driver patch if you want.

A draft driver patch will really help. I can test/debug. Otherwise, not
sure when I will really be able to get to this.

Regards,
Sekhar