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

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Message-ID: <Z-pSq5e9MXTX3qfe@shikoro>
Date: Mon, 31 Mar 2025 10:30:35 +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>,
	linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] mmc: core: Add support for graceful host removal for
 SD

On Thu, Mar 20, 2025 at 03:00:36PM +0100, Ulf Hansson wrote:
> An mmc host driver may allow to unbind from its corresponding host device.
> If an SD card is attached to the host, the mmc core will just try to cut
> the power for it, without obeying to the SD spec that potentially may
> damage the card.
> 
> Let's fix this problem by implementing a graceful power-down of the card at
> host removal.
> 
> Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>

Reviewed-by: Wolfram Sang <wsa+renesas@...g-engineering.com>

Testing needs another day, can't do this via remotelab.


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