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Message-Id: <20251021-improve_efficiency_of_clk_divider-v1-2-e2bf7f625af6@amlogic.com>
Date: Tue, 21 Oct 2025 18:12:31 +0800
From: Chuan Liu via B4 Relay <devnull+chuan.liu.amlogic.com@...nel.org>
To: Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>
Cc: linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
Chuan Liu <chuan.liu@...ogic.com>
Subject: [PATCH 2/2] clk: divider: improve the execution efficiency of
determine_rate()
From: Chuan Liu <chuan.liu@...ogic.com>
There is no need to evaluate further divider values once _is_best_div()
finds one that matches the target rate.
Signed-off-by: Chuan Liu <chuan.liu@...ogic.com>
---
drivers/clk/clk-divider.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
index 2601b6155afb..b92c4f800fa9 100644
--- a/drivers/clk/clk-divider.c
+++ b/drivers/clk/clk-divider.c
@@ -339,6 +339,9 @@ static int clk_divider_bestdiv(struct clk_hw *hw, struct clk_hw *parent,
best = now;
*best_parent_rate = parent_rate;
}
+
+ if (best == rate)
+ break;
}
if (!bestdiv) {
--
2.42.0
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