Re: [PATCH v2 06/11] staging/android: turn fence_info into a __u64 pointer

[Emil Velikov]

On 2 February 2016 at 15:23, Gustavo Padovan <gustavo@xxxxxxxxxxx> wrote:
> From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
>
> Making fence_info a pointer enables us to extend the struct in the future
> without breaking the ABI.
>
> v2: use type __u64 for fence_info
>
> Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
> ---
>  drivers/staging/android/sync.c      | 2 +-
>  drivers/staging/android/uapi/sync.h | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/android/sync.c b/drivers/staging/android/sync.c
> index f7530f0..03b1214 100644
> --- a/drivers/staging/android/sync.c
> +++ b/drivers/staging/android/sync.c
> @@ -525,7 +525,7 @@ static long sync_file_ioctl_fence_info(struct sync_file *sync_file,
>         if (info->status >= 0)
>                 info->status = !info->status;
>
> -       len = sizeof(struct sync_file_info);
> +       len = sizeof(struct sync_file_info) - sizeof(__u64);
>
>         for (i = 0; i < sync_file->num_fences; ++i) {
>                 struct fence *fence = sync_file->cbs[i].fence;
> diff --git a/drivers/staging/android/uapi/sync.h b/drivers/staging/android/uapi/sync.h
> index ed281fc..8e2ed32 100644
> --- a/drivers/staging/android/uapi/sync.h
> +++ b/drivers/staging/android/uapi/sync.h
> @@ -54,7 +54,7 @@ struct sync_file_info {
>         char    name[32];
>         __s32   status;
>
> -       __u8    fence_info[0];
> +       __u64   fence_info;
Please update the description in the commit block at the top. As-is
things are very confusing :-)

-Emil