From 2f290b7c67adf6459a17a4c978102af35cd62e4a Mon Sep 17 00:00:00 2001
From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Date: Sat, 26 Dec 2020 13:15:54 +0100
Subject: [PATCH] clk: meson: clk-pll: fix initializing the old rate (fallback) for a PLL
Git-commit: 2f290b7c67adf6459a17a4c978102af35cd62e4a
Patch-mainline: v5.12-rc1
References: git-fixes

The "rate" parameter in meson_clk_pll_set_rate() contains the new rate.
Retrieve the old rate with clk_hw_get_rate() so we don't inifinitely try
to switch from the new rate to the same rate again.

Fixes: 7a29a869434e8b ("clk: meson: Add support for Meson clock controller")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20201226121556.975418-2-martin.blumenstingl@googlemail.com
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/clk/meson/clk-pll.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/meson/clk-pll.c b/drivers/clk/meson/clk-pll.c
index b17a13e9337c..9404609b5ebf 100644
--- a/drivers/clk/meson/clk-pll.c
+++ b/drivers/clk/meson/clk-pll.c
@@ -371,7 +371,7 @@ static int meson_clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 	if (parent_rate == 0 || rate == 0)
 		return -EINVAL;
 
-	old_rate = rate;
+	old_rate = clk_hw_get_rate(hw);
 
 	ret = meson_clk_get_pll_settings(rate, parent_rate, &m, &n, pll);
 	if (ret)
-- 
2.26.2