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

[Wolfram Sang]

On Thu, Mar 20, 2025 at 03:00:35PM +0100, Ulf Hansson wrote:
> An mmc host driver may allow to unbind from its corresponding host device.
> If an eMMC card is attached to the host, the mmc core will just try to cut
> the power for it, without obeying to the eMMC spec.
> 
> Potentially this may damage the card and it may also prevent us from
> successfully doing a re-initialization of it, which would typically happen
> if/when we try to re-bind the mmc host driver.
> 
> To fix these problems, let's implement a graceful power-down of the card at
> host removal.
> 
> Reported-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>

Reviewed-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Tested-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>

Attachment: signature.asc
Description: PGP signature