linux-kernel - [patch V2 33/45] genirq/manage: Rework __disable_irq

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Message-ID: <20250429065422.013088277@linutronix.de>
Date: Tue, 29 Apr 2025 08:55:37 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Jiri Slaby <jirislaby@...nel.org>,
 Peter Zijlstra <peterz@...radead.org>
Subject: [patch V2 33/45] genirq/manage: Rework __disable_irq_nosync()

Use the new guards to get and lock the interrupt descriptor and tidy up the
code.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

---
 kernel/irq/manage.c |   13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -658,14 +658,11 @@ void __disable_irq(struct irq_desc *desc
 
 static int __disable_irq_nosync(unsigned int irq)
 {
-	unsigned long flags;
-	struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL);
-
-	if (!desc)
-		return -EINVAL;
-	__disable_irq(desc);
-	irq_put_desc_busunlock(desc, flags);
-	return 0;
+	scoped_irqdesc_get_and_lock(irq, IRQ_GET_DESC_CHECK_GLOBAL) {
+		__disable_irq(scoped_irqdesc);
+		return 0;
+	}
+	return -EINVAL;
 }
 
 /**