RE: [PATCH 1/2] mmc: core: use mrq->sbc when sending CMD23 for RPMB

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> 
> When sending out CMD23 in the blk preparation, the comment there
> rightfully says:
> 
> 	 * However, it is not sufficient to just send CMD23,
> 	 * and avoid the final CMD12, as on an error condition
> 	 * CMD12 (stop) needs to be sent anyway. This, coupled
> 	 * with Auto-CMD23 enhancements provided by some
> 	 * hosts, means that the complexity of dealing
> 	 * with this is best left to the host. If CMD23 is
> 	 * supported by card and host, we'll fill sbc in and let
> 	 * the host deal with handling it correctly.
> 
> Let's do this behaviour for RPMB as well, and not send CMD23
> independently. Otherwise IP cores (like Renesas SDHI) may timeout
> because of automatic CMD23/CMD12 handling.
> 
> Reported-by: Masaharu Hayakawa <masaharu.hayakawa.ry@xxxxxxxxxxx>
> Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
> Tested-by: Clément Péron <peron.clem@xxxxxxxxx>
Reviewed-by: Avri Altman <avri.altman@xxxxxxx>





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