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genirq: Move suspend/resume logic into irq/pm code

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No functional change. Preparatory patch for cleaning up the suspend
abort functionality. Update the comments while at it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Thomas Gleixner
2014-08-28 11:49:28 +02:00
committed by Rafael J. Wysocki
parent 068765ba79
commit 8df2e02c5c
3 changed files with 45 additions and 31 deletions
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28
kernel/irq/manage.c
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@@ -382,14 +382,8 @@ setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask)
}
#endif
void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend)
void __disable_irq(struct irq_desc *desc, unsigned int irq)
{
if (suspend) {
if (!desc->action || (desc->action->flags & IRQF_NO_SUSPEND))
return;
desc->istate |= IRQS_SUSPENDED;
}
if (!desc->depth++)
irq_disable(desc);
}
@@ -401,7 +395,7 @@ static int __disable_irq_nosync(unsigned int irq)
if (!desc)
return -EINVAL;
__disable_irq(desc, irq, false);
__disable_irq(desc, irq);
irq_put_desc_busunlock(desc, flags);
return 0;
}
@@ -442,20 +436,8 @@ void disable_irq(unsigned int irq)
}
EXPORT_SYMBOL(disable_irq);
void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume)
void __enable_irq(struct irq_desc *desc, unsigned int irq)
{
if (resume) {
if (!(desc->istate & IRQS_SUSPENDED)) {
if (!desc->action)
return;
if (!(desc->action->flags & IRQF_FORCE_RESUME))
return;
/* Pretend that it got disabled ! */
desc->depth++;
}
desc->istate &= ~IRQS_SUSPENDED;
}
switch (desc->depth) {
case 0:
err_out:
@@ -497,7 +479,7 @@ void enable_irq(unsigned int irq)
KERN_ERR "enable_irq before setup/request_irq: irq %u\n", irq))
goto out;
__enable_irq(desc, irq, false);
__enable_irq(desc, irq);
out:
irq_put_desc_busunlock(desc, flags);
}
@@ -1228,7 +1210,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
*/
if (shared && (desc->istate & IRQS_SPURIOUS_DISABLED)) {
desc->istate &= ~IRQS_SPURIOUS_DISABLED;
__enable_irq(desc, irq, false);
__enable_irq(desc, irq);
}
raw_spin_unlock_irqrestore(&desc->lock, flags);