On 9 May 2016 at 09:59, Wolfram Sang <[email protected]> wrote:
> From: Wolfram Sang <[email protected]>
>
> I have two SDIO WLAN cards which specify being SDIO Rev. 1.1 cards but
> their FUNCE tuple reports the smaller size of a Rev 1.0 card. So,
> enforce 1.0 on these cards to avoid reading the not present registers.
> They are not really used anyhow. My cards initialize properly after this
> patch.
>
> Signed-off-by: Wolfram Sang <[email protected]>
Thanks, applied for next!
Kind regards
Uffe
> ---
> drivers/mmc/core/sdio_cis.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
> index 6f6fc527a26338..dcb3dee59fa5f2 100644
> --- a/drivers/mmc/core/sdio_cis.c
> +++ b/drivers/mmc/core/sdio_cis.c
> @@ -177,8 +177,13 @@ static int cistpl_funce_func(struct mmc_card *card,
> struct sdio_func *func,
> vsn = func->card->cccr.sdio_vsn;
> min_size = (vsn == SDIO_SDIO_REV_1_00) ? 28 : 42;
>
> - if (size < min_size)
> + if (size == 28 && vsn == SDIO_SDIO_REV_1_10) {
> + pr_warn("%s: card has broken SDIO 1.1 CIS, forcing SDIO
> 1.0\n",
> + mmc_hostname(card->host));
> + vsn = SDIO_SDIO_REV_1_00;
> + } else if (size < min_size) {
> return -EINVAL;
> + }
>
> /* TPLFE_MAX_BLK_SIZE */
> func->max_blksize = buf[12] | (buf[13] << 8);
> --
> 2.7.0
>
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