Commit 90140d08 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq/manage: Rework irq_set_parent() 



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

No functional change.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/all/20250429065422.258216558@linutronix.de
parent a1ceb831

kernel/irq/manage.c

+5 −10
Original line number Diff line number Diff line
@@ -959,17 +959,12 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned long flags) 
#ifdef CONFIG_HARDIRQS_SW_RESEND

int irq_set_parent(int irq, int parent_irq)

{

	unsigned long flags;

	struct irq_desc *desc = irq_get_desc_lock(irq, &flags, 0);



	if (!desc)

		return -EINVAL;



	desc->parent_irq = parent_irq;



	irq_put_desc_unlock(desc, flags);

	scoped_irqdesc_get_and_lock(irq, 0) {

		scoped_irqdesc->parent_irq = parent_irq;

		return 0;

	}

	return -EINVAL;

}

EXPORT_SYMBOL_GPL(irq_set_parent);

#endif