mirrors/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2025-11-04 02:30:34 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

genirq/chip: Rework irq_set_chip()

Browse source 
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/20250429065421.295400891@linutronix.de
This commit is contained in:
Thomas Gleixner 2025-04-29 08:55:19 +02:00
parent e7c6542557
commit 46ff4d11f0
1 changed files with 12 additions and 16 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

20
kernel/irq/chip.c
View file

@ -40,20 +40,16 @@ struct irqaction chained_action = {
*/ */
int irq_set_chip(unsigned int irq, const struct irq_chip *chip) int irq_set_chip(unsigned int irq, const struct irq_chip *chip)
{ {
unsigned long flags; int ret = -EINVAL;
struct irq_desc *desc = irq_get_desc_lock(irq, &flags, 0);
if (!desc) scoped_irqdesc_get_and_lock(irq, 0) {
return -EINVAL; scoped_irqdesc->irq_data.chip = (struct irq_chip *)(chip ?: &no_irq_chip);
ret = 0;
desc->irq_data.chip = (struct irq_chip *)(chip ?: &no_irq_chip); }
irq_put_desc_unlock(desc, flags); /* For !CONFIG_SPARSE_IRQ make the irq show up in allocated_irqs. */
/* if (!ret)
* For !CONFIG_SPARSE_IRQ make the irq show up in
* allocated_irqs.
*/
irq_mark_irq(irq); irq_mark_irq(irq);
return 0; return ret;
} }
EXPORT_SYMBOL(irq_set_chip); EXPORT_SYMBOL(irq_set_chip);