[PATCH] clk: sunxi-ng: mp: Avoid computing the rate twice

[Samuel Holland]

ccu_mp_find_best() already computes a best_rate at the same time as the
best m and p factors. Return it so the caller does not need to duplicate
the division.

Signed-off-by: Samuel Holland <samuel at sholland.org>
---

 drivers/clk/sunxi-ng/ccu_mp.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/clk/sunxi-ng/ccu_mp.c b/drivers/clk/sunxi-ng/ccu_mp.c
index 57cf2d615148..cc94a694cb67 100644
--- a/drivers/clk/sunxi-ng/ccu_mp.c
+++ b/drivers/clk/sunxi-ng/ccu_mp.c
@@ -10,9 +10,9 @@
 #include "ccu_gate.h"
 #include "ccu_mp.h"
 
-static void ccu_mp_find_best(unsigned long parent, unsigned long rate,
-			     unsigned int max_m, unsigned int max_p,
-			     unsigned int *m, unsigned int *p)
+static unsigned long ccu_mp_find_best(unsigned long parent, unsigned long rate,
+				      unsigned int max_m, unsigned int max_p,
+				      unsigned int *m, unsigned int *p)
 {
 	unsigned long best_rate = 0;
 	unsigned int best_m = 0, best_p = 0;
@@ -35,6 +35,8 @@ static void ccu_mp_find_best(unsigned long parent, unsigned long rate,
 
 	*m = best_m;
 	*p = best_p;
+
+	return best_rate;
 }
 
 static unsigned long ccu_mp_find_best_with_parent_adj(struct clk_hw *hw,
@@ -109,8 +111,7 @@ static unsigned long ccu_mp_round_rate(struct ccu_mux_internal *mux,
 	max_p = cmp->p.max ?: 1 << ((1 << cmp->p.width) - 1);
 
 	if (!clk_hw_can_set_rate_parent(&cmp->common.hw)) {
-		ccu_mp_find_best(*parent_rate, rate, max_m, max_p, &m, &p);
-		rate = *parent_rate / p / m;
+		rate = ccu_mp_find_best(*parent_rate, rate, max_m, max_p, &m, &p);
 	} else {
 		rate = ccu_mp_find_best_with_parent_adj(hw, parent_rate, rate,
 							max_m, max_p);
-- 
2.35.1