[PATCH v2 3/8] clk: renesas: rcar-gen3: Avoid double table iteration in SD .set_rate()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The .set_rate() callback for the SD clocks is always called with a valid
clock rate, returned by .round_rate().  Hence there is no need to
iterate through the divider table twice: once to repeat the work done by
.round_rate(), and a second time to find the corresponding divider
entry.

Just iterate once, looking for the divider that matches the passed clock
rate.

Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
v2:
  - No changes.
---
 drivers/clk/renesas/rcar-gen3-cpg.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c
index 3480284a08308134..9f457411984b1ca4 100644
--- a/drivers/clk/renesas/rcar-gen3-cpg.c
+++ b/drivers/clk/renesas/rcar-gen3-cpg.c
@@ -339,14 +339,14 @@ static long cpg_sd_clock_round_rate(struct clk_hw *hw, unsigned long rate,
 }
 
 static int cpg_sd_clock_set_rate(struct clk_hw *hw, unsigned long rate,
-				   unsigned long parent_rate)
+				 unsigned long parent_rate)
 {
 	struct sd_clock *clock = to_sd_clock(hw);
-	unsigned int div = cpg_sd_clock_calc_div(clock, rate, parent_rate);
 	unsigned int i;
 
 	for (i = 0; i < clock->div_num; i++)
-		if (div == clock->div_table[i].div)
+		if (rate == DIV_ROUND_CLOSEST(parent_rate,
+					      clock->div_table[i].div))
 			break;
 
 	if (i >= clock->div_num)
-- 
2.17.1




[Index of Archives]     [Linux Samsung SOC]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Device Mapper]

  Powered by Linux