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authorThomas Gleixner <tglx@linutronix.de>2011-03-28 14:10:52 +0200
committerThomas Gleixner <tglx@linutronix.de>2011-03-28 16:55:10 +0200
commit32f4125ebffee4f3c4dbc6a437fc656129eb9e60 (patch)
treed64c6bb7ba40c33734896303734416ea5b4f3290 /kernel/irq/manage.c
parentc2d0c555c22242c3a76e366074c4d83ef9fa3b8c (diff)
downloadlinux-stericsson-32f4125ebffee4f3c4dbc6a437fc656129eb9e60.tar.gz
genirq: Move INPROGRESS, MASKED and DISABLED state flags to irq_data
We really need these flags for some of the interrupt chips. Move it from internal state to irq_data and provide proper accessors. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: David Daney <ddaney@caviumnetworks.com>
Diffstat (limited to 'kernel/irq/manage.c')
-rw-r--r--kernel/irq/manage.c30
1 files changed, 14 insertions, 16 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 3d151fd762ad..6e8acb755993 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -41,7 +41,7 @@ early_param("threadirqs", setup_forced_irqthreads);
void synchronize_irq(unsigned int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
- unsigned int state;
+ bool inprogress;
if (!desc)
return;
@@ -53,16 +53,16 @@ void synchronize_irq(unsigned int irq)
* Wait until we're out of the critical section. This might
* give the wrong answer due to the lack of memory barriers.
*/
- while (desc->istate & IRQS_INPROGRESS)
+ while (irqd_irq_inprogress(&desc->irq_data))
cpu_relax();
/* Ok, that indicated we're done: double-check carefully. */
raw_spin_lock_irqsave(&desc->lock, flags);
- state = desc->istate;
+ inprogress = irqd_irq_inprogress(&desc->irq_data);
raw_spin_unlock_irqrestore(&desc->lock, flags);
/* Oops, that failed? */
- } while (state & IRQS_INPROGRESS);
+ } while (inprogress);
/*
* We made sure that no hardirq handler is running. Now verify
@@ -563,9 +563,9 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
flags &= IRQ_TYPE_SENSE_MASK;
if (chip->flags & IRQCHIP_SET_TYPE_MASKED) {
- if (!(desc->istate & IRQS_MASKED))
+ if (!irqd_irq_masked(&desc->irq_data))
mask_irq(desc);
- if (!(desc->istate & IRQS_DISABLED))
+ if (!irqd_irq_disabled(&desc->irq_data))
unmask = 1;
}
@@ -663,7 +663,7 @@ again:
* irq_wake_thread(). See the comment there which explains the
* serialization.
*/
- if (unlikely(desc->istate & IRQS_INPROGRESS)) {
+ if (unlikely(irqd_irq_inprogress(&desc->irq_data))) {
raw_spin_unlock_irq(&desc->lock);
chip_bus_sync_unlock(desc);
cpu_relax();
@@ -680,12 +680,10 @@ again:
desc->threads_oneshot &= ~action->thread_mask;
- if (!desc->threads_oneshot && !(desc->istate & IRQS_DISABLED) &&
- (desc->istate & IRQS_MASKED)) {
- irq_compat_clr_masked(desc);
- desc->istate &= ~IRQS_MASKED;
- desc->irq_data.chip->irq_unmask(&desc->irq_data);
- }
+ if (!desc->threads_oneshot && !irqd_irq_disabled(&desc->irq_data) &&
+ irqd_irq_masked(&desc->irq_data))
+ unmask_irq(desc);
+
out_unlock:
raw_spin_unlock_irq(&desc->lock);
chip_bus_sync_unlock(desc);
@@ -779,7 +777,7 @@ static int irq_thread(void *data)
atomic_inc(&desc->threads_active);
raw_spin_lock_irq(&desc->lock);
- if (unlikely(desc->istate & IRQS_DISABLED)) {
+ if (unlikely(irqd_irq_disabled(&desc->irq_data))) {
/*
* CHECKME: We might need a dedicated
* IRQ_THREAD_PENDING flag here, which
@@ -997,8 +995,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
}
desc->istate &= ~(IRQS_AUTODETECT | IRQS_SPURIOUS_DISABLED | \
- IRQS_INPROGRESS | IRQS_ONESHOT | \
- IRQS_WAITING);
+ IRQS_ONESHOT | IRQS_WAITING);
+ irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS);
if (new->flags & IRQF_PERCPU) {
irqd_set(&desc->irq_data, IRQD_PER_CPU);