5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
[ Upstream commit b34b9547cee41575a4fddf390f615570759dc999 ]
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@xxxxxxxxxxxxxx>
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240218174138.1942418-2-martin.blumenstingl@xxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 44a61dc6f9320..e1c773bb55359 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)
--
2.43.0
