Re: [RFC PATCH] pps: make number of PPS devices configurable

[Vadim Fedorenko]

On 14/05/2026 15:08, Jakub Kicinski wrote:
> On Thu, 14 May 2026 15:03:03 +0100 Vadim Fedorenko wrote:
> > On 14/05/2026 14:55, Jakub Kicinski wrote:
> > > On Thu, 14 May 2026 11:26:14 +0000 Vadim Fedorenko wrote:
> > > > Modern systems may have more than 16 PPS sources and current hard-coded
> > > > limit breaks registration of some devices. Make the limit configurable
> > > > via Kconfig, keep default value of 16 devices. UAPI has to be changed to
> > > > support maximum possible number.
> > >
> > > Hm, since this is effectively just sizing an IDR maybe we should just
> > > bump it to 64? It appears to cost nothing if not used.
> >
> > Just bump to 64, but keep it constant? In this case maybe 256 just to
> > align with the max minor value for chardev (in compat mode)?
>
> That's fine too (the value is the count right? It's not the max id?
> Cause 256 would spill out of u8)

It's the count. Max id will be 255.