linux-kernel - [PATCH 2/8] irq: Export irq_to

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Message-Id: <1287563192-29685-3-git-send-email-sheng@linux.intel.com>
Date:	Wed, 20 Oct 2010 16:26:26 +0800
From:	Sheng Yang <sheng@...ux.intel.com>
To:	Avi Kivity <avi@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>
Cc:	kvm@...r.kernel.org, "Michael S. Tsirkin" <mst@...hat.com>,
	Sheng Yang <sheng@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/8] irq: Export irq_to_desc() to modules

KVM need to execute mask/unmask directly on MSI/MSI-X devices. The alternative
way of doing this is export mask_msi_irq(), but it lacks of checking if IRQ
type was really MSI.

Cc: linux-kernel@...r.kernel.org
Signed-off-by: Sheng Yang <sheng@...ux.intel.com>
---
 kernel/irq/handle.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 27e5c69..1ea2a24 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -139,6 +139,7 @@ struct irq_desc *irq_to_desc(unsigned int irq)
 {
 	return radix_tree_lookup(&irq_desc_tree, irq);
 }
+EXPORT_SYMBOL_GPL(irq_to_desc);
 
 void replace_irq_desc(unsigned int irq, struct irq_desc *desc)
 {
@@ -276,6 +277,7 @@ struct irq_desc *irq_to_desc(unsigned int irq)
 {
 	return (irq < NR_IRQS) ? irq_desc + irq : NULL;
 }
+EXPORT_SYMBOL_GPL(irq_to_desc);
 
 struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node)
 {
-- 
1.7.0.1

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