linux-kernel - [PATCH] clk: iproc: round clock rate to the closest

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Message-Id: <20200612225212.124301-1-ray.jui@broadcom.com>
Date:   Fri, 12 Jun 2020 15:52:12 -0700
From:   Ray Jui <ray.jui@...adcom.com>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        Lori Hikichi <lhikichi@...adcom.com>,
        Ray Jui <ray.jui@...adcom.com>
Subject: [PATCH] clk: iproc: round clock rate to the closest

From: Lori Hikichi <lhikichi@...adcom.com>

Change from 'DIV_ROUND_UP' to 'DIV_ROUND_CLOSEST' when calculating the
clock divisor in the iProc ASIU clock driver to allow to get to the
closest clock rate.

Fixes: 5fe225c105fd ("clk: iproc: add initial common clock support")
Signed-off-by: Lori Hikichi <lhikichi@...adcom.com>
Signed-off-by: Ray Jui <ray.jui@...adcom.com>
---
 drivers/clk/bcm/clk-iproc-asiu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/bcm/clk-iproc-asiu.c b/drivers/clk/bcm/clk-iproc-asiu.c
index 6fb8af506777..e062dd4992ea 100644
--- a/drivers/clk/bcm/clk-iproc-asiu.c
+++ b/drivers/clk/bcm/clk-iproc-asiu.c
@@ -119,7 +119,7 @@ static long iproc_asiu_clk_round_rate(struct clk_hw *hw, unsigned long rate,
 	if (rate == *parent_rate)
 		return *parent_rate;
 
-	div = DIV_ROUND_UP(*parent_rate, rate);
+	div = DIV_ROUND_CLOSEST(*parent_rate, rate);
 	if (div < 2)
 		return *parent_rate;
 
@@ -145,7 +145,7 @@ static int iproc_asiu_clk_set_rate(struct clk_hw *hw, unsigned long rate,
 		return 0;
 	}
 
-	div = DIV_ROUND_UP(parent_rate, rate);
+	div = DIV_ROUND_CLOSEST(parent_rate, rate);
 	if (div < 2)
 		return -EINVAL;
 
-- 
2.17.1