On Mon, Aug 31, 2020 at 08:32:59PM -0400, Jonathan Marek wrote:
> Initializing sensors requires attaching to pd 2. Add an ioctl for that.
> 
> This corresponds to FASTRPC_INIT_ATTACH_SENSORS in the downstream driver.
> 
> Signed-off-by: Jonathan Marek <jonat...@marek.ca>
> ---
>  drivers/misc/fastrpc.c      | 9 ++++++---
>  include/uapi/misc/fastrpc.h | 5 +++--
>  2 files changed, 9 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
> index 7939c55daceb..ea5e9ca0d705 100644
> --- a/drivers/misc/fastrpc.c
> +++ b/drivers/misc/fastrpc.c
> @@ -1276,7 +1276,7 @@ static int fastrpc_dmabuf_alloc(struct fastrpc_user 
> *fl, char __user *argp)
>       return 0;
>  }
>  
> -static int fastrpc_init_attach(struct fastrpc_user *fl)
> +static int fastrpc_init_attach(struct fastrpc_user *fl, int pd)
>  {
>       struct fastrpc_invoke_args args[1];
>       int tgid = fl->tgid;
> @@ -1287,7 +1287,7 @@ static int fastrpc_init_attach(struct fastrpc_user *fl)
>       args[0].fd = -1;
>       args[0].reserved = 0;
>       sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_ATTACH, 1, 0);
> -     fl->pd = 0;
> +     fl->pd = pd;
>  
>       return fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE,
>                                      sc, &args[0]);
> @@ -1477,7 +1477,10 @@ static long fastrpc_device_ioctl(struct file *file, 
> unsigned int cmd,
>               err = fastrpc_invoke(fl, argp);
>               break;
>       case FASTRPC_IOCTL_INIT_ATTACH:
> -             err = fastrpc_init_attach(fl);
> +             err = fastrpc_init_attach(fl, 0);
> +             break;
> +     case FASTRPC_IOCTL_INIT_ATTACH_SNS:
> +             err = fastrpc_init_attach(fl, 2);

Shouldn't you have #defines for those magic numbers somewhere?  What
does 0 and 2 mean?

thanks,

greg k-h

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