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genirq/chip: Rework irq_set_handler() variants

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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/20250429065421.590753128@linutronix.de
This commit is contained in:
Thomas Gleixner 2025-04-29 08:55:26 +02:00
parent b3801ddc68
commit 5cd05f3e23
1 changed files with 11 additions and 23 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

34
kernel/irq/chip.c
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@ -941,35 +941,23 @@ __irq_do_set_handler(struct irq_desc *desc, irq_flow_handler_t handle,
} }
} }
void void __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
__irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, const char *name)
const char *name)
{ {
unsigned long flags; scoped_irqdesc_get_and_lock(irq, 0)
struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, 0); __irq_do_set_handler(scoped_irqdesc, handle, is_chained, name);
if (!desc)
return;
__irq_do_set_handler(desc, handle, is_chained, name);
irq_put_desc_busunlock(desc, flags);
} }
EXPORT_SYMBOL_GPL(__irq_set_handler); EXPORT_SYMBOL_GPL(__irq_set_handler);
void void irq_set_chained_handler_and_data(unsigned int irq, irq_flow_handler_t handle,
irq_set_chained_handler_and_data(unsigned int irq, irq_flow_handler_t handle, void *data)
void *data)
{ {
unsigned long flags; scoped_irqdesc_get_and_buslock(irq, 0) {
struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, 0); struct irq_desc *desc = scoped_irqdesc;
if (!desc) desc->irq_common_data.handler_data = data;
return; __irq_do_set_handler(desc, handle, 1, NULL);
}
desc->irq_common_data.handler_data = data;
__irq_do_set_handler(desc, handle, 1, NULL);
irq_put_desc_busunlock(desc, flags);
} }
EXPORT_SYMBOL_GPL(irq_set_chained_handler_and_data); EXPORT_SYMBOL_GPL(irq_set_chained_handler_and_data);