Re: [PATCH 1/1] rust: use checked_div to make clippy happy
Richard Henderson <[email protected]> Thu, 19 Feb 2026 13:38:57 +1000
| Newsgroups | org.nongnu.qemu-rust,org.nongnu.qemu-devel |
|---|---|
| Message-ID | <[email protected]> |
On 2/19/26 05:24, John Snow wrote: > When upgrading from Fedora 41 to Fedora 43 for CI tests, clippy begins > complaining about not using checked_div instead of manually checking > divisors. Make clippy happy and use checked_div() instead. > > Signed-off-by: John Snow <[email protected]> > --- > rust/hw/core/src/qdev.rs | 14 ++++++-------- > 1 file changed, 6 insertions(+), 8 deletions(-) > > diff --git a/rust/hw/core/src/qdev.rs b/rust/hw/core/src/qdev.rs > index 145e20a984f..c4a7312168f 100644 > --- a/rust/hw/core/src/qdev.rs > +++ b/rust/hw/core/src/qdev.rs > @@ -425,18 +425,16 @@ pub const fn period_from_ns(ns: u64) -> u64 { > } > > pub const fn period_from_hz(hz: u64) -> u64 { > - if hz == 0 { > - 0 > - } else { > - Self::PERIOD_1SEC / hz > + match Self::PERIOD_1SEC.checked_div(hz) { > + Some(value) => value, > + None => 0, > } > } > > pub const fn period_to_hz(period: u64) -> u64 { > - if period == 0 { > - 0 > - } else { > - Self::PERIOD_1SEC / period > + match period.checked_div(Self::PERIOD_1SEC) { > + Some(value) => value, > + None => 0, > } > } > These conversions are inconsistent about the placement of divisor and dividend. r~