Commit bddd10c5 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq/manage: Rework enable_irq() 



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/20250429065422.071157729@linutronix.de
parent 1b744444

kernel/irq/manage.c

+6 −11
Original line number Diff line number Diff line
@@ -789,18 +789,13 @@ void __enable_irq(struct irq_desc *desc) 
 */

void enable_irq(unsigned int irq)

{

	unsigned long flags;

	struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL);

	scoped_irqdesc_get_and_lock(irq, IRQ_GET_DESC_CHECK_GLOBAL) {

		struct irq_desc *desc = scoped_irqdesc;



	if (!desc)

		if (WARN(!desc->irq_data.chip, "enable_irq before setup/request_irq: irq %u\n", irq))

			return;

	if (WARN(!desc->irq_data.chip,

		 KERN_ERR "enable_irq before setup/request_irq: irq %u\n", irq))

		goto out;



		__enable_irq(desc);

out:

	irq_put_desc_busunlock(desc, flags);

	}

}

EXPORT_SYMBOL(enable_irq);