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>

1 files changed, 25 insertions, 25 deletions

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 7305b297d1e..eb6078ca60c 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -46,9 +46,9 @@ void synchronize_irq(unsigned int irq)
 			cpu_relax();
 
 		/* Ok, that indicated we're done: double-check carefully. */
-		spin_lock_irqsave(&desc->lock, flags);
+		raw_spin_lock_irqsave(&desc->lock, flags);
 		status = desc->status;
-		spin_unlock_irqrestore(&desc->lock, flags);
+		raw_spin_unlock_irqrestore(&desc->lock, flags);
 
 		/* Oops, that failed? */
 	} while (status & IRQ_INPROGRESS);
@@ -114,7 +114,7 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask)
 	if (!desc->chip->set_affinity)
 		return -EINVAL;
 
-	spin_lock_irqsave(&desc->lock, flags);
+	raw_spin_lock_irqsave(&desc->lock, flags);
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	if (desc->status & IRQ_MOVE_PCNTXT) {
@@ -134,7 +134,7 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask)
 	}
 #endif
 	desc->status |= IRQ_AFFINITY_SET;
-	spin_unlock_irqrestore(&desc->lock, flags);
+	raw_spin_unlock_irqrestore(&desc->lock, flags);
 	return 0;
 }
 
@@ -181,11 +181,11 @@ int irq_select_affinity_usr(unsigned int irq)
 	unsigned long flags;
 	int ret;
 
-	spin_lock_irqsave(&desc->lock, flags);
+	raw_spin_lock_irqsave(&desc->lock, flags);
 	ret = setup_affinity(irq, desc);
 	if (!ret)
 		irq_set_thread_affinity(desc);
-	spin_unlock_irqrestore(&desc->lock, flags);
+	raw_spin_unlock_irqrestore(&desc->lock, flags);
 
 	return ret;
 }
@@ -231,9 +231,9 @@ void disable_irq_nosync(unsigned int irq)
 		return;
 
 	chip_bus_lock(irq, desc);
-	spin_lock_irqsave(&desc->lock, flags);
+	raw_spin_lock_irqsave(&desc->lock, flags);
 	__disable_irq(desc, irq, false);
-	spin_unlock_irqrestore(&desc->lock, flags);
+	raw_spin_unlock_irqrestore(&desc->lock, flags);
 	chip_bus_sync_unlock(irq, desc);
 }
 EXPORT_SYMBOL(disable_irq_nosync);
@@ -308,9 +308,9 @@ void enable_irq(unsigned int irq)
 		return;
 
 	chip_bus_lock(irq, desc);
-	spin_lock_irqsave(&desc->lock, flags);
+	raw_spin_lock_irqsave(&desc->lock, flags);
 	__enable_irq(desc, irq, false);
-	spin_unlock_irqrestore(&desc->lock, flags);
+	raw_spin_unlock_irqrestore(&desc->lock, flags);
 	chip_bus_sync_unlock(irq, desc);
 }
 EXPORT_SYMBOL(enable_irq);
@@ -347,7 +347,7 @@ int set_irq_wake(unsigned int irq, unsigned int on)
 	/* wakeup-capable irqs can be shared between drivers that
 	 * don't need to have the same sleep mode behaviors.
 	 */
-	spin_lock_irqsave(&desc->lock, flags);
+	raw_spin_lock_irqsave(&desc->lock, flags);
 	if (on) {
 		if (desc->wake_depth++ == 0) {
 			ret = set_irq_wake_real(irq, on);
@@ -368,7 +368,7 @@ int set_irq_wake(unsigned int irq, unsigned int on)
 		}
 	}
 
-	spin_unlock_irqrestore(&desc->lock, flags);
+	raw_spin_unlock_irqrestore(&desc->lock, flags);
 	return ret;
 }
 EXPORT_SYMBOL(set_irq_wake);
@@ -484,12 +484,12 @@ static int irq_wait_for_interrupt(struct irqaction *action)
 static void irq_finalize_oneshot(unsigned int irq, struct irq_desc *desc)
 {
 	chip_bus_lock(irq, desc);
-	spin_lock_irq(&desc->lock);
+	raw_spin_lock_irq(&desc->lock);
 	if (!(desc->status & IRQ_DISABLED) && (desc->status & IRQ_MASKED)) {
 		desc->status &= ~IRQ_MASKED;
 		desc->chip->unmask(irq);
 	}
-	spin_unlock_irq(&desc->lock);
+	raw_spin_unlock_irq(&desc->lock);
 	chip_bus_sync_unlock(irq, desc);
 }
 
@@ -514,9 +514,9 @@ irq_thread_check_affinity(struct irq_desc *desc, struct irqaction *action)
 		return;
 	}
 
-	spin_lock_irq(&desc->lock);
+	raw_spin_lock_irq(&desc->lock);
 	cpumask_copy(mask, desc->affinity);
-	spin_unlock_irq(&desc->lock);
+	raw_spin_unlock_irq(&desc->lock);
 
 	set_cpus_allowed_ptr(current, mask);
 	free_cpumask_var(mask);
@@ -545,7 +545,7 @@ static int irq_thread(void *data)
 
 		atomic_inc(&desc->threads_active);
 
-		spin_lock_irq(&desc->lock);
+		raw_spin_lock_irq(&desc->lock);
 		if (unlikely(desc->status & IRQ_DISABLED)) {
 			/*
 			 * CHECKME: We might need a dedicated
@@ -555,9 +555,9 @@ static int irq_thread(void *data)
 			 * retriggers the interrupt itself --- tglx
 			 */
 			desc->status |= IRQ_PENDING;
-			spin_unlock_irq(&desc->lock);
+			raw_spin_unlock_irq(&desc->lock);
 		} else {
-			spin_unlock_irq(&desc->lock);
+			raw_spin_unlock_irq(&desc->lock);
 
 			action->thread_fn(action->irq, action->dev_id);
 
@@ -679,7 +679,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 	/*
 	 * The following block of code has to be executed atomically
 	 */
-	spin_lock_irqsave(&desc->lock, flags);
+	raw_spin_lock_irqsave(&desc->lock, flags);
 	old_ptr = &desc->action;
 	old = *old_ptr;
 	if (old) {
@@ -775,7 +775,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 		__enable_irq(desc, irq, false);
 	}
 
-	spin_unlock_irqrestore(&desc->lock, flags);
+	raw_spin_unlock_irqrestore(&desc->lock, flags);
 
 	/*
 	 * Strictly no need to wake it up, but hung_task complains
@@ -802,7 +802,7 @@ mismatch:
 	ret = -EBUSY;
 
 out_thread:
-	spin_unlock_irqrestore(&desc->lock, flags);
+	raw_spin_unlock_irqrestore(&desc->lock, flags);
 	if (new->thread) {
 		struct task_struct *t = new->thread;
 
@@ -844,7 +844,7 @@ static struct irqaction *__free_irq(unsigned int irq, void *dev_id)
 	if (!desc)
 		return NULL;
 
-	spin_lock_irqsave(&desc->lock, flags);
+	raw_spin_lock_irqsave(&desc->lock, flags);
 
 	/*
 	 * There can be multiple actions per IRQ descriptor, find the right
@@ -856,7 +856,7 @@ static struct irqaction *__free_irq(unsigned int irq, void *dev_id)
 
 		if (!action) {
 			WARN(1, "Trying to free already-free IRQ %d\n", irq);
-			spin_unlock_irqrestore(&desc->lock, flags);
+			raw_spin_unlock_irqrestore(&desc->lock, flags);
 
 			return NULL;
 		}
@@ -884,7 +884,7 @@ static struct irqaction *__free_irq(unsigned int irq, void *dev_id)
 			desc->chip->disable(irq);
 	}
 
-	spin_unlock_irqrestore(&desc->lock, flags);
+	raw_spin_unlock_irqrestore(&desc->lock, flags);
 
 	unregister_handler_proc(irq, action);