linux-kernel - Re: [PATCH v2 2/5] mmc: core: Further avoid re-storing power to the eMMC before a shutdown

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Message-ID: <Z_aIXqdWh8n-4LKo@shikoro>
Date: Wed, 9 Apr 2025 16:46:54 +0200
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: Ulf Hansson <ulf.hansson@...aro.org>
Cc: linux-mmc@...r.kernel.org, Adrian Hunter <adrian.hunter@...el.com>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	Avri Altman <Avri.Altman@...disk.com>,
	linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/5] mmc: core: Further avoid re-storing power to the
 eMMC before a shutdown


> I understand what you are saying and I agree. However, the problem is
> that your concern applies to a lot more code in the mmc core, but this
> condition.

We can easily agree on that :)

> Don't get me wrong, I don't mind useful comments and good
> documentation, but perhaps what we are really missing is a general mmc
> documentation that describes how the core is working and in particular
> the power-management  part of it.

That would be the ideal solution, no doubt.

> Unfortunately, I don't think I will have the bandwidth currently to
> work on this.

Same here. Plus, I don't have a complete understanding of it. Obtaining
this understanding and then write some docs about my findings would be
awesome, of course. But -EBUSY, too...

> That said, I am going to apply the $subject patch as is - but feel

I still think that having the comment is better than not having it, but
I accept your decision and will still be happy that we finally solved
the power-off-notification issue \o/


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