genirq: Convert irq_desc.lock to raw_spinlock
Convert locks which cannot be sleeping locks in preempt-rt to
raw_spinlocks.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index e49ea1c..89fb90a 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -28,7 +28,7 @@
struct irqaction *action;
int ok = 0, work = 0;
- spin_lock(&desc->lock);
+ raw_spin_lock(&desc->lock);
/* Already running on another processor */
if (desc->status & IRQ_INPROGRESS) {
/*
@@ -37,13 +37,13 @@
*/
if (desc->action && (desc->action->flags & IRQF_SHARED))
desc->status |= IRQ_PENDING;
- spin_unlock(&desc->lock);
+ raw_spin_unlock(&desc->lock);
return ok;
}
/* Honour the normal IRQ locking */
desc->status |= IRQ_INPROGRESS;
action = desc->action;
- spin_unlock(&desc->lock);
+ raw_spin_unlock(&desc->lock);
while (action) {
/* Only shared IRQ handlers are safe to call */
@@ -56,7 +56,7 @@
}
local_irq_disable();
/* Now clean up the flags */
- spin_lock(&desc->lock);
+ raw_spin_lock(&desc->lock);
action = desc->action;
/*
@@ -68,9 +68,9 @@
* Perform real IRQ processing for the IRQ we deferred
*/
work = 1;
- spin_unlock(&desc->lock);
+ raw_spin_unlock(&desc->lock);
handle_IRQ_event(irq, action);
- spin_lock(&desc->lock);
+ raw_spin_lock(&desc->lock);
desc->status &= ~IRQ_PENDING;
}
desc->status &= ~IRQ_INPROGRESS;
@@ -80,7 +80,7 @@
*/
if (work && desc->chip && desc->chip->end)
desc->chip->end(irq);
- spin_unlock(&desc->lock);
+ raw_spin_unlock(&desc->lock);
return ok;
}