up_rate 237 drivers/clk/clk-divider.c unsigned long up_rate, down_rate; up_rate 250 drivers/clk/clk-divider.c up_rate = DIV_ROUND_UP_ULL((u64)parent_rate, up); up_rate 253 drivers/clk/clk-divider.c return (rate - up_rate) <= (down_rate - rate) ? up : down;