Re: [PATCH v2] mmc: document 'Reliable Write' bit in uapi header

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On Mon, 3 Dec 2018 at 20:56, Wolfram Sang
<wsa+renesas@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> If we use it this way, people should know about it. Also, replace
> true/false with nonzero/zero because the flag is not strictly a bool
> anymore.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Applied for next, thanks!

Kind regards
Uffe

> ---
>
> Change since V1:
> * reworded first line of comment as well. Thanks, Geert!
>
> Still not super happy about shifting into the sign bit, but yeah...
> don't break userspace, I guess.
>
>  include/uapi/linux/mmc/ioctl.h | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/include/uapi/linux/mmc/ioctl.h b/include/uapi/linux/mmc/ioctl.h
> index 45f369dc0a42..00c08120f3ba 100644
> --- a/include/uapi/linux/mmc/ioctl.h
> +++ b/include/uapi/linux/mmc/ioctl.h
> @@ -5,7 +5,10 @@
>  #include <linux/types.h>
>
>  struct mmc_ioc_cmd {
> -       /* Implies direction of data.  true = write, false = read */
> +       /*
> +        * Direction of data: nonzero = write, zero = read.
> +        * Bit 31 selects 'Reliable Write' for RPMB.
> +        */
>         int write_flag;
>
>         /* Application-specific command.  true = precede with CMD55 */
> --
> 2.11.0
>



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