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From: "Eric W. Biederman" <ebiederm@xmission.com>
To: Andrew Morton <akpm@osdl.org>
Cc: <linux-kernel@vger.kernel.org>, <linux-acpi@vger.kernel.org>,
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       Roland Dreier <rdreier@cisco.com>, Tony Luck <tony.luck@intel.com>,
       "Eric W. Biederman" <ebiederm@xmission.com>
Subject: [PATCH 10/25] ia64 irq:  Dynamic irq support
Reply-To: "Eric W. Biederman" <ebiederm@xmission.com>
Date: Tue, 20 Jun 2006 16:28:23 -0600
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Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---
 arch/ia64/kernel/irq_ia64.c |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index f503530..b0189c7 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -31,6 +31,7 @@ #include <linux/smp.h>
 #include <linux/smp_lock.h>
 #include <linux/threads.h>
 #include <linux/bitops.h>
+#include <linux/irq.h>
 
 #include <asm/delay.h>
 #include <asm/intrinsics.h>
@@ -106,6 +107,28 @@ reserve_irq_vector (int vector)
 	return test_and_set_bit(pos, ia64_vector_mask);
 }
 
+/*
+ * Dynamic irq allocate and deallocation for MSI
+ */
+int create_irq(void)
+{
+	int vector;
+	unsigned long flags;
+
+	vector = assign_irq_vector(AUTO_ASSIGN);
+
+	if (vector >= 0)
+		dynamic_irq_init(irq);
+
+	return vector;
+}
+
+void destroy_irq(unsigned int irq)
+{
+	dynamic_irq_cleanup(irq);
+	free_irq_vector(irq);
+}
+
 #ifdef CONFIG_SMP
 #	define IS_RESCHEDULE(vec)	(vec == IA64_IPI_RESCHEDULE)
 #else
-- 
1.4.0.gc07e