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genirq/manage: Rework enable_irq()

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

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/20250429065422.071157729@linutronix.de
This commit is contained in:
Thomas Gleixner 2025-04-29 08:55:38 +02:00
parent 1b74444467
commit bddd10c554
1 changed files with 6 additions and 11 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

17
kernel/irq/manage.c
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@ -789,18 +789,13 @@ void __enable_irq(struct irq_desc *desc)
*/ */
void enable_irq(unsigned int irq) void enable_irq(unsigned int irq)
{ {
unsigned long flags; scoped_irqdesc_get_and_lock(irq, IRQ_GET_DESC_CHECK_GLOBAL) {
struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, 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; return;
if (WARN(!desc->irq_data.chip, __enable_irq(desc);
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); EXPORT_SYMBOL(enable_irq);