Re: [PATCH v4] mmc: core: allow detection of locked cards

[Daniel Kucera <linux-mmc@danman.eu>]

On 2024-07-09 22:06, Avri Altman wrote:
>> If I understand correctly, there is no point in sending the CMD13 
>> above, unless
>> this is the first attempt to initialize the card.
>> Therefore, it's better to move the whole part above, inside the below 
>> if-clause
>> too, otherwise we would end up sending a CMD13 in cases when it's not
>> needed.
> R1_CARD_IS_LOCKED is CMD13 response, but already in CMD7 response as 
> well,
> So theoretically you want to skip mmc_sd_setup_card altogether.

Do you mean to modify:
mmc_select_card(struct mmc_card *card)
to somehow return or save the R1 response to card struct?

Because currently, it is not available.

Thank you,
Daniel.

> ACMD6, CMD6, and CMD19 should wait for CMD42 to unlock the card.
> 
> Thanks,
> Avri
> 
>> 
>> > +
>> > +       if (!reinit && !(card_status & R1_CARD_IS_LOCKED)) {
>> >                 /*
>> >                  * Fetch SCR from card.
>> >                  */
>> > --
>> > 2.34.1
>> >
>> 
>> Kind regards
>> Uffe