linux-kernel - [patch 24/46] genirq/chip: Rework irq_set_handler

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Message-ID: <20250313155915.521160607@linutronix.de>
Date: Thu, 13 Mar 2025 17:00:23 +0100 (CET)
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Peter Zijlstra <peterz@...radead.org>,
 Jiri Slaby <jirislaby@...nel.org>
Subject: [patch 24/46] genirq/chip: Rework irq_set_handler_data()

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

Fixup the kernel doc comment while at it.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 kernel/irq/chip.c |   21 +++++++++------------
 1 file changed, 9 insertions(+), 12 deletions(-)

--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -67,22 +67,19 @@ int irq_set_irq_type(unsigned int irq, u
 EXPORT_SYMBOL(irq_set_irq_type);
 
 /**
- *	irq_set_handler_data - set irq handler data for an irq
- *	@irq:	Interrupt number
- *	@data:	Pointer to interrupt specific data
+ * irq_set_handler_data - set irq handler data for an irq
+ * @irq:	Interrupt number
+ * @data:	Pointer to interrupt specific data
  *
- *	Set the hardware irq controller data for an irq
+ * Set the hardware irq controller data for an irq
  */
 int irq_set_handler_data(unsigned int irq, void *data)
 {
-	unsigned long flags;
-	struct irq_desc *desc = irq_get_desc_lock(irq, &flags, 0);
-
-	if (!desc)
-		return -EINVAL;
-	desc->irq_common_data.handler_data = data;
-	irq_put_desc_unlock(desc, flags);
-	return 0;
+	scoped_irqdesc_get_and_lock(irq, 0) {
+		scoped_irqdesc->irq_common_data.handler_data = data;
+		return 0;
+	}
+	return -EINVAL;
 }
 EXPORT_SYMBOL(irq_set_handler_data);