Re: [PATCH] rust: clk: document overflow panics in `Hertz` constructors

[Brian Masney <bmasney@redhat.com>]

On Thu, Sep 17, 2026 at 07:10:42PM +0100, Alexandre Courbot wrote:
> On Tue Sep 8, 2026 at 11:56 PM BST, Georgios Androutsopoulos wrote:
> > `Hertz::from_khz()`, `from_mhz()` and `from_ghz()` multiply their
> > argument by 1_000, 1_000_000 and 1_000_000_000 respectively without
> > checking for overflow. When `CONFIG_RUST_OVERFLOW_CHECKS` is enabled,
> > each panics once its argument exceeds `c_ulong::MAX` divided by that
> > factor. None of the three documents this. The panic occurs only at
> > runtime, when the argument is not a constant expression.
> >
> > Add the missing `# Panics` sections stating the bound for each unit.
> >
> > Fixes: d01d70205601 ("rust: clk: Add initial abstractions")
> > Signed-off-by: Georgios Androutsopoulos <georgeandrout13@gmail.com>
> 
> As we just discussed at Kangrejos we might want to harden these a bit,
> but meanwhile documenting the behavior is indeed a good idea.
> 
> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>

Acked-by: Brian Masney <bmasney@redhat.com>

I assume this will go through the rust tree? If not, I'm happy to take
it through the clk tree, assuming the rust devs are happy with this.

Brian