Re: [PATCH] LinuxPPS (with new syscalls API) - new version

David Woodhouse
2007-07-03T13:09:22Z

On Tue, 2007-07-03 at 11:48 +0200, Rodolfo Giometti wrote:
> On Sun, Jul 01, 2007 at 01:03:11PM +0100, David Woodhouse wrote:
> >
> > Seems reasonable enough in principle -- but whatever you do, don't use
> > "long" for it. That would definitely need different behaviour for 32-bit
> > vs. 64-bit. Use explicitly sized types such as uint32_t or uint64_t.
>
> Here the patch to convert LinuxPPS data structs into fixed ones.
>
> Please, take a look at it and report possible modifications.

Looks relatively sane at first glance; busy this week so haven't looked
very hard yet. Two thing though... you're mixing proper C types
(uint32_t) and the Linux-specific legacy crap types (__u32). Pick one. I
won't recommend _which_ one, because if I do I'll make Andrew unhappy.
But pick one; don't use both at the same time.

Also read Documentation/volatile-considered-harmful.txt and ponder
deeply your use of 'volatile' on certain members of struct pps_s.

--
dwmw2