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genirq: Pass desc to __irq_free instead of irq number

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Given that irq_to_desc() is a radix_tree_lookup and the reverse
operation is only a pointer dereference and that all callers of
__free_irq already have the desc, pass the desc instead of the irq
number.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: kernel@pengutronix.de
Link: https://lkml.kernel.org/r/20180319105202.9794-1-u.kleine-koenig@pengutronix.de
This commit is contained in:
Uwe Kleine König
2018-03-20 08:52:44 +01:00
committed by Thomas Gleixner
parent cc6c98485f
commit 83ac4ca943
1 changed files with 4 additions and 4 deletions
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kernel/irq/manage.c
+4 -4
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@@ -1523,9 +1523,9 @@ EXPORT_SYMBOL_GPL(setup_irq);
* Internal function to unregister an irqaction - used to free * Internal function to unregister an irqaction - used to free
* regular and special interrupts that are part of the architecture. * regular and special interrupts that are part of the architecture.
*/ */
static struct irqaction *__free_irq(unsigned int irq, void *dev_id) static struct irqaction *__free_irq(struct irq_desc *desc, void *dev_id)
{ {
struct irq_desc *desc = irq_to_desc(irq); unsigned irq = desc->irq_data.irq;
struct irqaction *action, **action_ptr; struct irqaction *action, **action_ptr;
unsigned long flags; unsigned long flags;
@@ -1655,7 +1655,7 @@ void remove_irq(unsigned int irq, struct irqaction *act)
struct irq_desc *desc = irq_to_desc(irq); struct irq_desc *desc = irq_to_desc(irq);
if (desc && !WARN_ON(irq_settings_is_per_cpu_devid(desc))) if (desc && !WARN_ON(irq_settings_is_per_cpu_devid(desc)))
__free_irq(irq, act->dev_id); __free_irq(desc, act->dev_id);
} }
EXPORT_SYMBOL_GPL(remove_irq); EXPORT_SYMBOL_GPL(remove_irq);
@@ -1689,7 +1689,7 @@ const void *free_irq(unsigned int irq, void *dev_id)
desc->affinity_notify = NULL; desc->affinity_notify = NULL;
#endif #endif
action = __free_irq(irq, dev_id); action = __free_irq(desc, dev_id);
if (!action) if (!action)
return NULL; return NULL;