openwrt/target/linux/bcm27xx/patches-5.15/950-0833-clk-Use-clamp-instead-of-open-coding-our-own.patch

From dbd88e6fdd547cf8f6765b8dade9f89cf5c0ead9 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Mon, 17 Jan 2022 16:38:10 +0100
Subject: [PATCH] clk: Use clamp instead of open-coding our own

The code in clk_set_rate_range() will, if the current rate is outside of
the new range, force it to the minimum or maximum.

Since it's running under the condition that the rate is either lower
than the minimum, or higher than the maximum, this is equivalent to
using clamp, while being less readable. Let's switch to using clamp
instead.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 drivers/clk/clk.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -2400,11 +2400,7 @@ int clk_set_rate_range(struct clk *clk,
 		 *   this corner case when determining the rate
 		 */
 
-		if (rate < min)
-			rate = min;
-		else
-			rate = max;
-
+		rate = clamp(clk->core->req_rate, min, max);
 		ret = clk_core_set_rate_nolock(clk->core, rate);
 		if (ret) {
 			/* rollback the changes */