From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 8 Feb 2011 11:36:06 +0000 (+0100)
Subject: genirq: Move IRQ_MASKED to core
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=6e40262ea43c4b0e3f435b3a083e4461ef921c17;p=deliverable%2Flinux.git

genirq: Move IRQ_MASKED to core

Keep status in sync until all users are fixed.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 7ca55c9deba4..9800bac4c398 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -57,11 +57,11 @@ typedef	void (*irq_flow_handler_t)(unsigned int irq,
 #define IRQ_WAITING		0x00000400	/* DEPRECATED */
 #define IRQ_DISABLED		0x00000800	/* DEPRECATED */
 #define IRQ_PENDING		0x00001000	/* DEPRECATED */
+#define IRQ_MASKED		0x00002000	/* DEPRECATED */
 #endif
 
 
 #define IRQ_LEVEL		0x00004000	/* IRQ level triggered */
-#define IRQ_MASKED		0x00008000	/* IRQ masked - shouldn't be seen again */
 #define IRQ_PER_CPU		0x00010000	/* IRQ is per CPU */
 #define IRQ_NOPROBE		0x00020000	/* IRQ is not valid for probing */
 #define IRQ_NOREQUEST		0x00040000	/* IRQ cannot be requested */
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 17c87865bfb1..73b2e7e00934 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -176,6 +176,18 @@ static void irq_state_set_disabled(struct irq_desc *desc)
 	irq_compat_set_disabled(desc);
 }
 
+static void irq_state_clr_masked(struct irq_desc *desc)
+{
+	desc->istate &= ~IRQS_MASKED;
+	irq_compat_clr_masked(desc);
+}
+
+static void irq_state_set_masked(struct irq_desc *desc)
+{
+	desc->istate |= IRQS_MASKED;
+	irq_compat_set_masked(desc);
+}
+
 int irq_startup(struct irq_desc *desc)
 {
 	irq_state_clr_disabled(desc);
@@ -183,7 +195,7 @@ int irq_startup(struct irq_desc *desc)
 
 	if (desc->irq_data.chip->irq_startup) {
 		int ret = desc->irq_data.chip->irq_startup(&desc->irq_data);
-		desc->status &= ~IRQ_MASKED;
+		irq_state_clr_masked(desc);
 		return ret;
 	}
 
@@ -201,7 +213,7 @@ void irq_shutdown(struct irq_desc *desc)
 		desc->irq_data.chip->irq_disable(&desc->irq_data);
 	else
 		desc->irq_data.chip->irq_mask(&desc->irq_data);
-	desc->status |= IRQ_MASKED;
+	irq_state_set_masked(desc);
 }
 
 void irq_enable(struct irq_desc *desc)
@@ -211,7 +223,7 @@ void irq_enable(struct irq_desc *desc)
 		desc->irq_data.chip->irq_enable(&desc->irq_data);
 	else
 		desc->irq_data.chip->irq_unmask(&desc->irq_data);
-	desc->status &= ~IRQ_MASKED;
+	irq_state_clr_masked(desc);
 }
 
 void irq_disable(struct irq_desc *desc)
@@ -219,8 +231,8 @@ void irq_disable(struct irq_desc *desc)
 	irq_state_set_disabled(desc);
 	if (desc->irq_data.chip->irq_disable) {
 		desc->irq_data.chip->irq_disable(&desc->irq_data);
-		desc->status |= IRQ_MASKED;
 	}
+	irq_state_set_masked(desc);
 }
 
 #ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
@@ -352,14 +364,14 @@ static inline void mask_ack_irq(struct irq_desc *desc)
 		if (desc->irq_data.chip->irq_ack)
 			desc->irq_data.chip->irq_ack(&desc->irq_data);
 	}
-	desc->status |= IRQ_MASKED;
+	irq_state_set_masked(desc);
 }
 
 static inline void mask_irq(struct irq_desc *desc)
 {
 	if (desc->irq_data.chip->irq_mask) {
 		desc->irq_data.chip->irq_mask(&desc->irq_data);
-		desc->status |= IRQ_MASKED;
+		irq_state_set_masked(desc);
 	}
 }
 
@@ -367,7 +379,7 @@ static inline void unmask_irq(struct irq_desc *desc)
 {
 	if (desc->irq_data.chip->irq_unmask) {
 		desc->irq_data.chip->irq_unmask(&desc->irq_data);
-		desc->status &= ~IRQ_MASKED;
+		irq_state_clr_masked(desc);
 	}
 }
 
@@ -583,7 +595,7 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
 		 */
 		if (unlikely(desc->istate & IRQS_PENDING)) {
 			if (!(desc->istate & IRQS_DISABLED) &&
-			    (desc->status & IRQ_MASKED))
+			    (desc->istate & IRQS_MASKED))
 				unmask_irq(desc);
 		}
 
diff --git a/kernel/irq/compat.h b/kernel/irq/compat.h
index 0067a69781f4..593abecbcc44 100644
--- a/kernel/irq/compat.h
+++ b/kernel/irq/compat.h
@@ -28,6 +28,15 @@ static inline void irq_compat_clr_pending(struct irq_desc *desc)
 {
 	desc->status &= ~IRQ_PENDING;
 }
+static inline void irq_compat_set_masked(struct irq_desc *desc)
+{
+	desc->status |= IRQ_MASKED;
+}
+
+static inline void irq_compat_clr_masked(struct irq_desc *desc)
+{
+	desc->status &= ~IRQ_MASKED;
+}
 #else
 static inline void irq_compat_set_progress(struct irq_desc *desc) { }
 static inline void irq_compat_clr_progress(struct irq_desc *desc) { }
@@ -35,5 +44,7 @@ static inline void irq_compat_set_disabled(struct irq_desc *desc) { }
 static inline void irq_compat_clr_disabled(struct irq_desc *desc) { }
 static inline void irq_compat_set_pending(struct irq_desc *desc) { }
 static inline void irq_compat_clr_pending(struct irq_desc *desc) { }
+static inline void irq_compat_set_masked(struct irq_desc *desc) { }
+static inline void irq_compat_clr_masked(struct irq_desc *desc) { }
 #endif
 
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index fdf2524437eb..3f2fcc194dcc 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -47,6 +47,7 @@ enum {
  * IRQS_WAITING			- irq is waiting
  * IRQS_DISABLED		- irq is disabled
  * IRQS_PENDING			- irq is pending and replayed later
+ * IRQS_MASKED			- irq is masked
  */
 enum {
 	IRQS_AUTODETECT		= 0x00000001,
@@ -58,6 +59,7 @@ enum {
 	IRQS_WAITING		= 0x00000080,
 	IRQS_DISABLED		= 0x00000100,
 	IRQS_PENDING		= 0x00000200,
+	IRQS_MASKED		= 0x00000400,
 };
 
 #define irq_data_to_desc(data)	container_of(data, struct irq_desc, irq_data)
@@ -142,7 +144,6 @@ static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
 	}
 
 	P(IRQ_LEVEL);
-	P(IRQ_MASKED);
 #ifdef CONFIG_IRQ_PER_CPU
 	P(IRQ_PER_CPU);
 #endif
@@ -156,6 +157,7 @@ static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
 	PS(IRQS_WAITING);
 	PS(IRQS_DISABLED);
 	PS(IRQS_PENDING);
+	PS(IRQS_MASKED);
 }
 
 #undef P
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index ac060814a787..83fd20194e5b 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -646,8 +646,9 @@ again:
 		goto again;
 	}
 
-	if (!(desc->istate & IRQS_DISABLED) && (desc->status & IRQ_MASKED)) {
-		desc->status &= ~IRQ_MASKED;
+	if (!(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);
 	}
 	raw_spin_unlock_irq(&desc->lock);
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index 8c68cb8555a7..6f2f98480354 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -69,7 +69,7 @@ void move_native_irq(int irq)
 	 * threaded interrupt with ONESHOT set, we can end up with an
 	 * interrupt storm.
 	 */
-	masked = desc->status & IRQ_MASKED;
+	masked = desc->istate & IRQS_MASKED;
 	if (!masked)
 		desc->irq_data.chip->irq_mask(&desc->irq_data);
 	move_masked_irq(irq);
diff --git a/kernel/irq/settings.h b/kernel/irq/settings.h
index 623fcf83e7de..2cd45fd5ec8a 100644
--- a/kernel/irq/settings.h
+++ b/kernel/irq/settings.h
@@ -16,3 +16,5 @@ enum {
 #define IRQ_DISABLED		GOT_YOU_MORON
 #undef IRQ_PENDING
 #define IRQ_PENDING		GOT_YOU_MORON
+#undef IRQ_MASKED
+#define IRQ_MASKED		GOT_YOU_MORON