[patch V2 22/45] genirq/chip: Rework irq_set_irq_type()

Thomas Gleixner
2025-04-29T06:55:23Z

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>

---
kernel/irq/chip.c | 19 ++++++-------------
1 file changed, 6 insertions(+), 13 deletions(-)

--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -54,22 +54,15 @@ int irq_set_chip(unsigned int irq, const
EXPORT_SYMBOL(irq_set_chip);

/**
- * irq_set_irq_type - set the irq trigger type for an irq
- * @irq: irq number
- * @type: IRQ_TYPE_{LEVEL,EDGE}_* value - see include/linux/irq.h
+ * irq_set_irq_type - set the irq trigger type for an irq
+ * @irq: irq number
+ * @type: IRQ_TYPE_{LEVEL,EDGE}_* value - see include/linux/irq.h
*/
int irq_set_irq_type(unsigned int irq, unsigned int type)
{
- unsigned long flags;
- struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL);
- int ret = 0;
-
- if (!desc)
- return -EINVAL;
-
- ret = __irq_set_trigger(desc, type);
- irq_put_desc_busunlock(desc, flags);
- return ret;
+ scoped_irqdesc_get_and_buslock(irq, IRQ_GET_DESC_CHECK_GLOBAL)
+ return __irq_set_trigger(scoped_irqdesc, type);
+ return -EINVAL;
}
EXPORT_SYMBOL(irq_set_irq_type);