From 2bdd10558c8d93009cb6c32ce9e30800fbb08add Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 8 Feb 2011 17:22:00 +0100
Subject: genirq: Move IRQ_AFFINITY_SET to core

Keep status in sync until last abuser is gone.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 kernel/irq/compat.h    | 11 +++++++++++
 kernel/irq/internals.h |  4 ++++
 kernel/irq/manage.c    | 11 +++++++----
 kernel/irq/settings.h  |  2 ++
 4 files changed, 24 insertions(+), 4 deletions(-)

(limited to 'kernel/irq')

diff --git a/kernel/irq/compat.h b/kernel/irq/compat.h
index 5e33aadadacc..6bbaf66aca85 100644
--- a/kernel/irq/compat.h
+++ b/kernel/irq/compat.h
@@ -46,6 +46,15 @@ static inline void irq_compat_clr_move_pending(struct irq_desc *desc)
 {
 	desc->status &= ~IRQ_MOVE_PENDING;
 }
+static inline void irq_compat_set_affinity(struct irq_desc *desc)
+{
+	desc->status |= IRQ_AFFINITY_SET;
+}
+
+static inline void irq_compat_clr_affinity(struct irq_desc *desc)
+{
+	desc->status &= ~IRQ_AFFINITY_SET;
+}
 #else
 static inline void irq_compat_set_progress(struct irq_desc *desc) { }
 static inline void irq_compat_clr_progress(struct irq_desc *desc) { }
@@ -57,5 +66,7 @@ static inline void irq_compat_set_masked(struct irq_desc *desc) { }
 static inline void irq_compat_clr_masked(struct irq_desc *desc) { }
 static inline void irq_compat_set_move_pending(struct irq_desc *desc) { }
 static inline void irq_compat_clr_move_pending(struct irq_desc *desc) { }
+static inline void irq_compat_set_affinity(struct irq_desc *desc) { }
+static inline void irq_compat_clr_affinity(struct irq_desc *desc) { }
 #endif
 
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index a80b44d2735e..6776453c454c 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -150,3 +150,7 @@ static inline void irqd_set(struct irq_data *d, unsigned int mask)
 	d->state_use_accessors |= mask;
 }
 
+static inline bool irqd_has_set(struct irq_data *d, unsigned int mask)
+{
+	return d->state_use_accessors & mask;
+}
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 550ae97a0040..8246afc81956 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -164,7 +164,8 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *mask)
 		kref_get(&desc->affinity_notify->kref);
 		schedule_work(&desc->affinity_notify->work);
 	}
-	desc->status |= IRQ_AFFINITY_SET;
+	irq_compat_set_affinity(desc);
+	irqd_set(&desc->irq_data, IRQD_AFFINITY_SET);
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
 	return ret;
 }
@@ -272,12 +273,14 @@ setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask)
 	 * Preserve an userspace affinity setup, but make sure that
 	 * one of the targets is online.
 	 */
-	if (desc->status & (IRQ_AFFINITY_SET)) {
+	if (irqd_has_set(&desc->irq_data, IRQD_AFFINITY_SET)) {
 		if (cpumask_intersects(desc->irq_data.affinity,
 				       cpu_online_mask))
 			set = desc->irq_data.affinity;
-		else
-			desc->status &= ~IRQ_AFFINITY_SET;
+		else {
+			irq_compat_clr_affinity(desc);
+			irqd_clear(&desc->irq_data, IRQD_AFFINITY_SET);
+		}
 	}
 
 	cpumask_and(mask, cpu_online_mask, set);
diff --git a/kernel/irq/settings.h b/kernel/irq/settings.h
index ba0fffe410ad..da5acb446b1c 100644
--- a/kernel/irq/settings.h
+++ b/kernel/irq/settings.h
@@ -29,6 +29,8 @@ enum {
 #define IRQ_PER_CPU		GOT_YOU_MORON
 #undef IRQ_NO_BALANCING
 #define IRQ_NO_BALANCING	GOT_YOU_MORON
+#undef IRQ_AFFINITY_SET
+#define IRQ_AFFINITY_SET	GOT_YOU_MORON
 #undef IRQF_MODIFY_MASK
 #define IRQF_MODIFY_MASK	GOT_YOU_MORON
 
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