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genirq/manage: Rework irq_set_irqchip_state() 

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/20250429065422.670808288@linutronix.de
pull/1250/head
Thomas Gleixner 2025-04-29 08:55:53 +02:00
parent 782249a997
commit 193879e28b
1 changed files with 15 additions and 28 deletions
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43
kernel/irq/manage.c
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@ -2703,39 +2703,26 @@ EXPORT_SYMBOL_GPL(irq_get_irqchip_state);
*/
int irq_set_irqchip_state(unsigned int irq, enum irqchip_irq_state which, bool val)
{
struct irq_desc *desc;
struct irq_data *data;
struct irq_chip *chip;
unsigned long flags;
int err = -EINVAL;
scoped_irqdesc_get_and_buslock(irq, 0) {
struct irq_data *data = irq_desc_get_irq_data(scoped_irqdesc);
struct irq_chip *chip;
desc = irq_get_desc_buslock(irq, &flags, 0);
if (!desc)
return err;
do {
chip = irq_data_get_irq_chip(data);
data = irq_desc_get_irq_data(desc);
if (WARN_ON_ONCE(!chip))
return -ENODEV;
do {
chip = irq_data_get_irq_chip(data);
if (WARN_ON_ONCE(!chip)) {
err = -ENODEV;
goto out_unlock;
}
if (chip->irq_set_irqchip_state)
break;
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
data = data->parent_data;
#else
data = NULL;
#endif
} while (data);
if (chip->irq_set_irqchip_state)
break;
if (data)
err = chip->irq_set_irqchip_state(data, which, val);
data = irqd_get_parent_data(data);
} while (data);
out_unlock:
irq_put_desc_busunlock(desc, flags);
return err;
if (data)
return chip->irq_set_irqchip_state(data, which, val);
}
return -EINVAL;
}
EXPORT_SYMBOL_GPL(irq_set_irqchip_state);