Received-SPF: pass (google.com: domain of linux-kernel+bounces-70461-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: daniel.lezcano@linaro.org,
	tglx@linutronix.de
Cc: linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	andrea.merello@gmail.com,
	patrice.chotard@foss.st.com,
	linux-amlogic@lists.infradead.org,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Subject: [PATCH v1 1/2] clocksource/drivers/arm_global_timer: Fix maximum prescaler value
Date: Sun, 18 Feb 2024 18:41:37 +0100
Message-ID: <20240218174138.1942418-2-martin.blumenstingl@googlemail.com>
In-Reply-To: <20240218174138.1942418-1-martin.blumenstingl@googlemail.com>
References: <20240218174138.1942418-1-martin.blumenstingl@googlemail.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

The prescaler in the "Global Timer Control Register bit assignments" is
documented to use bits [15:8], which means that the maximum prescaler
register value is 0xff.

Fixes: 171b45a4a70e ("clocksource/drivers/arm_global_timer: Implement rate compensation whenever source clock changes")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 drivers/clocksource/arm_global_timer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clocksource/arm_global_timer.c b/drivers/clocksource/arm_global_timer.c
index 44a61dc6f932..e1c773bb5535 100644
--- a/drivers/clocksource/arm_global_timer.c
+++ b/drivers/clocksource/arm_global_timer.c
@@ -32,7 +32,7 @@
 #define GT_CONTROL_IRQ_ENABLE		BIT(2)	/* banked */
 #define GT_CONTROL_AUTO_INC		BIT(3)	/* banked */
 #define GT_CONTROL_PRESCALER_SHIFT      8
-#define GT_CONTROL_PRESCALER_MAX        0xF
+#define GT_CONTROL_PRESCALER_MAX        0xFF
 #define GT_CONTROL_PRESCALER_MASK       (GT_CONTROL_PRESCALER_MAX << \
 					 GT_CONTROL_PRESCALER_SHIFT)
 
-- 
2.43.2