linux-kernel - Re: [PATCH 4/5] mmc: core: Add support for graceful host removal for eMMC

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Message-ID: <CAPDyKFreJu8jZXoBJ2J1Mgj+OOAJX5rjzX0D4ZfbTj_uVrPKPw@mail.gmail.com>
Date: Fri, 28 Mar 2025 11:21:42 +0100
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Avri Altman <Avri.Altman@...disk.com>
Cc: "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>, Adrian Hunter <adrian.hunter@...el.com>, 
	Wolfram Sang <wsa+renesas@...g-engineering.com>, 
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>, 
	"linux-renesas-soc@...r.kernel.org" <linux-renesas-soc@...r.kernel.org>, 
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/5] mmc: core: Add support for graceful host removal for eMMC

On Fri, 28 Mar 2025 at 09:13, Avri Altman <Avri.Altman@...disk.com> wrote:
>
> > +/*
> > + * Host is being removed. Free up the current card and do a graceful power-
> > off.
> > + */
> > +static void mmc_remove(struct mmc_host *host) {
> > +     get_device(&host->card->dev);
> > +     mmc_remove_card(host->card);
> > +
> > +     _mmc_suspend(host, MMC_POWEROFF_UNBIND);
> Couldn't find how _mmc_suspend handles this new power off flag?

Right. You need to look closer at mmc_may_poweroff_notify() as it
should return false if MMC_POWEROFF_UNBIND, unless
MMC_CAP2_FULL_PWR_CYCLE.

[...]

Kind regards
Uffe