From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 29 Apr 2025 06:55:25 +0000 (+0200)
Subject: genirq/chip: Rework irq_set_chip_data()
X-Git-Tag: v6.16-rc1~189^2~30
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b3801ddc6883169a2e020dbf06da3723446808ee;p=thirdparty%2Flinux.git

genirq/chip: Rework irq_set_chip_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@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/all/20250429065421.532308759@linutronix.de
---

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 13d8c89cf5647..2041225332fd6 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -115,22 +115,19 @@ int irq_set_msi_desc(unsigned int irq, struct msi_desc *entry)
 }
 
 /**
- *	irq_set_chip_data - set irq chip data for an irq
- *	@irq:	Interrupt number
- *	@data:	Pointer to chip specific data
+ * irq_set_chip_data - set irq chip data for an irq
+ * @irq:	Interrupt number
+ * @data:	Pointer to chip specific data
  *
- *	Set the hardware irq chip data for an irq
+ * Set the hardware irq chip data for an irq
  */
 int irq_set_chip_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_data.chip_data = data;
-	irq_put_desc_unlock(desc, flags);
-	return 0;
+	scoped_irqdesc_get_and_lock(irq, 0) {
+		scoped_irqdesc->irq_data.chip_data = data;
+		return 0;
+	}
+	return -EINVAL;
 }
 EXPORT_SYMBOL(irq_set_chip_data);