From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 29 Apr 2025 06:55:17 +0000 (+0200)
Subject: genirq/chip: Use lock guards where applicable
X-Git-Tag: v6.16-rc1~189^2~35
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e7c654255791e9a95b62b992ef3540dfee00e8d5;p=thirdparty%2Fkernel%2Flinux.git

genirq/chip: Use lock guards where applicable

Convert all lock/unlock pairs to guards and tidy up the code.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/all/20250429065421.236248749@linutronix.de
---

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 2b23630f4c630..daa356a94ab3f 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -1049,25 +1049,21 @@ EXPORT_SYMBOL_GPL(irq_modify_status);
  */
 void irq_cpu_online(void)
 {
-	struct irq_desc *desc;
-	struct irq_chip *chip;
-	unsigned long flags;
 	unsigned int irq;
 
 	for_each_active_irq(irq) {
-		desc = irq_to_desc(irq);
+		struct irq_desc *desc = irq_to_desc(irq);
+		struct irq_chip *chip;
+
 		if (!desc)
 			continue;
 
-		raw_spin_lock_irqsave(&desc->lock, flags);
-
+		guard(raw_spinlock_irqsave)(&desc->lock);
 		chip = irq_data_get_irq_chip(&desc->irq_data);
 		if (chip && chip->irq_cpu_online &&
 		    (!(chip->flags & IRQCHIP_ONOFFLINE_ENABLED) ||
 		     !irqd_irq_disabled(&desc->irq_data)))
 			chip->irq_cpu_online(&desc->irq_data);
-
-		raw_spin_unlock_irqrestore(&desc->lock, flags);
 	}
 }
 
@@ -1079,25 +1075,21 @@ void irq_cpu_online(void)
  */
 void irq_cpu_offline(void)
 {
-	struct irq_desc *desc;
-	struct irq_chip *chip;
-	unsigned long flags;
 	unsigned int irq;
 
 	for_each_active_irq(irq) {
-		desc = irq_to_desc(irq);
+		struct irq_desc *desc = irq_to_desc(irq);
+		struct irq_chip *chip;
+
 		if (!desc)
 			continue;
 
-		raw_spin_lock_irqsave(&desc->lock, flags);
-
+		guard(raw_spinlock_irqsave)(&desc->lock);
 		chip = irq_data_get_irq_chip(&desc->irq_data);
 		if (chip && chip->irq_cpu_offline &&
 		    (!(chip->flags & IRQCHIP_ONOFFLINE_ENABLED) ||
 		     !irqd_irq_disabled(&desc->irq_data)))
 			chip->irq_cpu_offline(&desc->irq_data);
-
-		raw_spin_unlock_irqrestore(&desc->lock, flags);
 	}
 }
 #endif