Re: [PATCH v3 1/3] clk: k210: remove an implicit 64-bit division

[Stephen Boyd]

Quoting Jesse Taube (2023-02-28 16:26:55)
> diff --git a/drivers/clk/clk-k210.c b/drivers/clk/clk-k210.c
> index 67a7cb3503c3..4eed667eddaf 100644
> --- a/drivers/clk/clk-k210.c
> +++ b/drivers/clk/clk-k210.c
> @@ -495,7 +495,7 @@ static unsigned long k210_pll_get_rate(struct clk_hw *hw,
>         f = FIELD_GET(K210_PLL_CLKF, reg) + 1;
>         od = FIELD_GET(K210_PLL_CLKOD, reg) + 1;
>  
> -       return (u64)parent_rate * f / (r * od);
> +       return div_u64((u64)parent_rate * f, r * od);

The equation 'r * od' can't overflow 32-bits, right?