Messages in this thread | | | Subject | Re: [PATCH v3 1/3] clk: k210: remove an implicit 64-bit division | From | Stephen Boyd <> | Date | Mon, 06 Mar 2023 14:31:00 -0800 |
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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?
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