diff --git a/drivers/pwm/pwm-rcar.c b/drivers/pwm/pwm-rcar.c
index b437192380e23..55f46d09602b1 100644
--- a/drivers/pwm/pwm-rcar.c
+++ b/drivers/pwm/pwm-rcar.c
@@ -110,7 +110,7 @@ static int rcar_pwm_set_counter(struct rcar_pwm_chip *rp, int div, int duty_ns,
 	unsigned long clk_rate = clk_get_rate(rp->clk);
 	u32 cyc, ph;
 
-	one_cycle = (unsigned long long)NSEC_PER_SEC * 100ULL * (1 << div);
+	one_cycle = NSEC_PER_SEC * 100ULL << div;
 	do_div(one_cycle, clk_rate);
 
 	tmp = period_ns * 100ULL;