[PATCH] mmc: core: sd: check card write-protect lock while resuming

[Ulf Hansson]

On 18 August 2014 12:00, Barry Song <Barry.Song at csr.com> wrote:
> From: Minda Chen <Minda.Chen at csr.com>
>
> After suspending, unplug the sdcard, and set sd WP lock,
> insert it again, then resume the system. resume codes do
> not check the the sdcard write-proctect lock. now check
> it.
>
> Signed-off-by: Minda Chen <Minda.Chen at csr.com>
> Signed-off-by: Barry Song <Baohua.Song at csr.com>
> ---
>  drivers/mmc/core/sd.c | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
> index 0c44510..890557a 100644
> --- a/drivers/mmc/core/sd.c
> +++ b/drivers/mmc/core/sd.c
> @@ -910,6 +910,7 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
>         int err;
>         u32 cid[4];
>         u32 rocr = 0;
> +       bool oldro, ro;
>
>         BUG_ON(!host);
>         WARN_ON(!host->claimed);
> @@ -922,6 +923,12 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
>                 if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0)
>                         return -ENOENT;
>
> +               if (host->ops->get_ro) {
> +                       ro = host->ops->get_ro(host) ? true : false;
> +                       oldro = mmc_card_readonly(oldcard) ? true : false;
> +                       if (oldro ^ ro)
> +                               return -ENOENT;
> +               }

Seems like this code belongs better in mmc_sd_setup_card(). Could you
try moving it there.

Kind regards
Uffe

>                 card = oldcard;
>         } else {
>                 /*
> --
> 2.0.4
>
>
>
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