Re: [PATCH] media: do not use C++ style comments in uapi headers

[Joe Perches]

On Sun, 2019-06-09 at 16:14 +0900, Masahiro Yamada wrote:
> Hi Joe,
> 
> On Thu, Jun 6, 2019 at 2:06 AM Joe Perches <joe@xxxxxxxxxxx> wrote:
> > Perhaps a checkpatch change too:
> > 
> > The first block updates unsigned only bitfields
> > The second tests uapi definitions and suggests "__<kernel_types"
> 
> Good.
> 
> In addition,
> 
> "warn if __u8, __u16, __u32, __u64 are used outside of uapi/"
> 
> Lots of kernel-space headers use __u{8,16,32,64} instead of u{8,16,32,64}
> just because developers often miss to understand when to use
> the underscore-prefixed types.

The problem there is that checkpatch can't know if the
__<uapi_type> being used is for an actual uapi use or not.

coccinelle could be much better at that.