linux-kernel - Re: [PATCH 2/2] mmc: Add mmc_force_detect_change_begin /

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Date:   Mon, 8 Oct 2018 11:53:21 +0200
From:   Frieder Schrempf <frieder.schrempf@...eet.de>
To:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Hans de Goede <hdegoede@...hat.com>,
        quentin.schulz@...e-electrons.com
Cc:     ulf.hansson@...aro.org, gregkh@...uxfoundation.org,
        linus.walleij@...aro.org, shawn.lin@...k-chips.com,
        adrian.hunter@...el.com, baolin.wang@...aro.org,
        thomas.petazzoni@...e-electrons.com, linux-kernel@...r.kernel.org,
        linux-mmc@...r.kernel.org, devel@...verdev.osuosl.org,
        icenowy@...c.xyz, wens@...e.org
Subject: Re: [PATCH 2/2] mmc: Add mmc_force_detect_change_begin / _end
 functions

Hi,

On 27.09.2018 10:14, Maxime Ripard wrote:
> On Wed, Sep 26, 2018 at 10:19:22PM +0200, Hans de Goede wrote:
>> On 26-09-18 16:44, Frieder Schrempf wrote:
>>> Hi,
>>>
>>> On Fri, Feb 09, 2018 at 03:01:00PM +0100, Ulf Hansson wrote:
>>>> [...]
>>>>
>>>>>>> I'd like to know if any progress has been made on that problem
>>> (I may
>>>>>>> have missed patches).
>>>>>>> Had you had the time to look at the issue?
>>>>>>
>>>>>> I have looked at the issue, but not manage to cook some patches
>>> for it.
>>>>>>
>>>>>> However, it's on my top of my TODO list for mmc. No promises, but
>>>>>> perhaps and hopefully I manage to get something posted during the
>>>>>> coming release cycle.
>>>
>>> I would be interested in a ESP8089 driver in mainline and that's why I want to pick up this discussion.
>>>
>>> What is the current status of the "mmc_reprobe_device" implementation, that Hans was explaining and Ulf wanted to provide some months ago?
>>
>> Ulf did eventually write a new way to deal with this and then Quentin
>> did manage to get the esp8089 driver to work with it, the new function
>> to use for this is added by this commit:
>>
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/mmc/core?id=1433269c4d2461be1f36db5dbb453976b38996ff
>>
>> I'm not sure what the status of upstreaming the ep8089 driver is now
>> that we've this in place.
>>
>> Quentin, do you have a version of the esp8089 driver somewhere
>> which will work correctly with the new mmc_sw_reset() function?
>>
>> Also what is the status of adding this driver to say staging?
> 
> IIRC, we tried to get it into staging, and we got told that it was too
> nice for staging at this point. So we're basically stuck somewhere
> between staging and !staging, with the driver being too nice for the
> former, and not nice enough for the latter :)

Ok, and is there someone willing to continue upstreaming the driver? 
Maybe someone can rebase and resend the latest approach?

After all it looks like a lot of work has already been done.

Thanks,
Frieder