[PATCH] irqchip/exynos-combiner: remove useless spinlock

[Marek Szyprowski]

irq_controller_lock doesn't protect anything, it must be some leftover
from early development or copy/paste. Remove it completely.

Suggested-by: Thomas Gleixner <tglx at kernel.org>
Suggested-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Link: https://lore.kernel.org/all/20260520220422.3522908-1-m.szyprowski@samsung.com/
Fixes: 96031b31a4b3 ("irqchip/exynos-combiner: Switch to raw_spinlock")
Signed-off-by: Marek Szyprowski <m.szyprowski at samsung.com>
---
 drivers/irqchip/exynos-combiner.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c
index 03cafcc5c835..d9d408cb4711 100644
--- a/drivers/irqchip/exynos-combiner.c
+++ b/drivers/irqchip/exynos-combiner.c
@@ -24,8 +24,6 @@
 
 #define IRQ_IN_COMBINER		8
 
-static DEFINE_RAW_SPINLOCK(irq_controller_lock);
-
 struct combiner_chip_data {
 	unsigned int hwirq_offset;
 	unsigned int irq_mask;
@@ -72,9 +70,7 @@ static void combiner_handle_cascade_irq(struct irq_desc *desc)
 
 	chained_irq_enter(chip, desc);
 
-	raw_spin_lock(&irq_controller_lock);
 	status = readl_relaxed(chip_data->base + COMBINER_INT_STATUS);
-	raw_spin_unlock(&irq_controller_lock);
 	status &= chip_data->irq_mask;
 
 	if (status == 0)
-- 
2.34.1