linux-kernel - [PATCH 06/19] clk: amlogic: Fix out-of-range PLL frequency setting

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Message-Id: <20250930-a4_a5_add_clock_driver-v1-6-a9acf7951589@amlogic.com>
Date: Tue, 30 Sep 2025 17:37:19 +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>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Jerome Brunet <jbrunet@...libre.com>, Kevin Hilman <khilman@...libre.com>, 
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc: linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-amlogic@...ts.infradead.org, 
 linux-arm-kernel@...ts.infradead.org, 
 Xianwei Zhao <xianwei.zhao@...ogic.com>, Chuan Liu <chuan.liu@...ogic.com>
Subject: [PATCH 06/19] clk: amlogic: Fix out-of-range PLL frequency setting

From: Chuan Liu <chuan.liu@...ogic.com>

meson_clk_get_pll_range_index incorrectly determines the maximum value
of 'm'.

Fixes: 8eed1db1adec6 ("clk: meson: pll: update driver for the g12a")
Signed-off-by: Chuan Liu <chuan.liu@...ogic.com>
---
 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 c1e4c5710015..602c93aba3cc 100644
--- a/drivers/clk/meson/clk-pll.c
+++ b/drivers/clk/meson/clk-pll.c
@@ -191,7 +191,7 @@ static int meson_clk_get_pll_range_index(unsigned long rate,
 	*m = meson_clk_get_pll_range_m(rate, parent_rate, *n, pll);
 
 	/* the pre-divider gives a multiplier too big - stop */
-	if (*m >= (1 << pll->m.width))
+	if (*m > pll->range->max)
 		return -EINVAL;
 
 	return 0;

-- 
2.42.0