RE: [PATCH 1/3] mmc: block: ioctl: define rpmb reliable flag

From: Avri Altman
Date: Thu Apr 20 2023 - 08:47:08 EST



> Give a proper name to BIT 31 which is used as reliable write
> for RPMB.
>
> Signed-off-by: Christian Loehle <cloehle@xxxxxxxxxxxxxx>
Reviewed-by: Avri Altman <avri.altman@xxxxxxx>

Thanks (see nit below),
Avri

> ---
> drivers/mmc/core/block.c | 5 ++++-
> include/uapi/linux/mmc/ioctl.h | 1 +
> 2 files changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
> index 672ab90c4b2d..16e262ddc954 100644
> --- a/drivers/mmc/core/block.c
> +++ b/drivers/mmc/core/block.c
> @@ -49,6 +49,8 @@
>
> #include <linux/uaccess.h>
>
> +#include <uapi/linux/mmc/ioctl.h>
> +
> #include "queue.h"
> #include "block.h"
> #include "core.h"
> @@ -538,7 +540,8 @@ static int __mmc_blk_ioctl_cmd(struct mmc_card
> *card, struct mmc_blk_data *md,
> * may be increased by a future standard. We just copy the
> * 'Reliable Write' bit here.
> */
> - sbc.arg = data.blocks | (idata->ic.write_flag & BIT(31));
> + sbc.arg = data.blocks |
> + (idata->ic.write_flag & MMC_RPMB_RELIABLE_WRITE);
> sbc.flags = MMC_RSP_R1 | MMC_CMD_AC;
> mrq.sbc = &sbc;
> }
> diff --git a/include/uapi/linux/mmc/ioctl.h b/include/uapi/linux/mmc/ioctl.h
> index e7401ade6822..b2ff7f5be87b 100644
> --- a/include/uapi/linux/mmc/ioctl.h
> +++ b/include/uapi/linux/mmc/ioctl.h
> @@ -11,6 +11,7 @@ struct mmc_ioc_cmd {
> * Bit 31 selects 'Reliable Write' for RPMB.
No longer needed.

Thanks,
Avri
> */
> int write_flag;
> +#define MMC_RPMB_RELIABLE_WRITE (1 << 31)
>
> /* Application-specific command. true = precede with CMD55 */
> int is_acmd;
> --
> 2.37.3
>
>
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