diff --git a/drivers/clk/rockchip/clk-pll.c b/drivers/clk/rockchip/clk-pll.c
index c4d2768a680d..7633ae392e53 100644
--- a/drivers/clk/rockchip/clk-pll.c
+++ b/drivers/clk/rockchip/clk-pll.c
@@ -376,7 +376,7 @@ static unsigned long rockchip_rk3036_pll_recalc_rate(struct clk_hw *hw,
 {
 	struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
 	struct rockchip_pll_rate_table cur;
-	u64 rate64 = prate;
+	u64 rate64 = prate, frac_rate64 = prate;
 
 	if (pll->sel && pll->scaling)
 		return pll->scaling;
@@ -388,7 +388,7 @@ static unsigned long rockchip_rk3036_pll_recalc_rate(struct clk_hw *hw,
 
 	if (cur.dsmpd == 0) {
 		/* fractional mode */
-		u64 frac_rate64 = prate * cur.frac;
+		frac_rate64 *= cur.frac;
 
 		do_div(frac_rate64, cur.refdiv);
 		rate64 += frac_rate64 >> 24;