clk: k210: remove an implicit 64-bit division

The K210 clock driver depends on SOC_CANAAN, which is only selectable
when !MMU on RISC-V. !MMU is not possible on 32-bit yet, but patches
have been sent for its enabling. The kernel test robot reported this
implicit 64-bit division there.

Replace the implicit division with an explicit one.

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/linux-riscv/202301201538.zNlqgE4L-lkp@intel.com/
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
Link: https://lore.kernel.org/r/20230301002657.352637-2-Mr.Bossman075@gmail.com
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/clk-k210.c b/drivers/clk/clk-k210.c
index 67a7cb3503c3697b169e436f5aeb361de4e2febe..4eed667eddaf25b4e3bd974ade93a0243109bf6a 100644 (file)
--- 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);
 }
 
 static const struct clk_ops k210_pll_ops = {