linux-kernel - [PATCH] irq: export handle_simple_irq, irq_modify_status, irq_to_desc, irq_alloc_descs and irq_free

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Date:	Wed,  4 May 2011 17:18:10 +0100
From:	Jonathan Cameron <jic23@....ac.uk>
To:	linux-kernel@...r.kernel.org
Cc:	tglx@...utronix.de, Jonathan Cameron <jic23@....ac.uk>
Subject: [PATCH] irq: export handle_simple_irq, irq_modify_status, irq_to_desc, irq_alloc_descs and irq_free_descs

V2: add irq_alloc_descs and irq_free_descs for dynamic pool allocation.

This is to allow their use in IIO. We have complete control of
both the irq_chip creation and requesting of irqs so would like
to be able to build as a module. That requires these exports.

Signed-off-by: Jonathan Cameron <jic23@....ac.uk>
---
 kernel/irq/chip.c    |    2 ++
 kernel/irq/irqdesc.c |    3 +++
 2 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 4af1e2b..ad409d3 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -310,6 +310,7 @@ handle_simple_irq(unsigned int irq, struct irq_desc *desc)
 out_unlock:
 	raw_spin_unlock(&desc->lock);
 }
+EXPORT_SYMBOL_GPL(handle_simple_irq);
 
 /**
  *	handle_level_irq - Level type irq handler
@@ -612,6 +613,7 @@ void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set)
 
 	irq_put_desc_unlock(desc, flags);
 }
+EXPORT_SYMBOL_GPL(irq_modify_status);
 
 /**
  *	irq_cpu_online - Invoke all irq_cpu_online functions.
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 2c039c9..5ac14e2 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -110,6 +110,7 @@ struct irq_desc *irq_to_desc(unsigned int irq)
 {
 	return radix_tree_lookup(&irq_desc_tree, irq);
 }
+EXPORT_SYMBOL_GPL(irq_to_desc);
 
 static void delete_irq_desc(unsigned int irq)
 {
@@ -311,6 +312,7 @@ void irq_free_descs(unsigned int from, unsigned int cnt)
 	bitmap_clear(allocated_irqs, from, cnt);
 	mutex_unlock(&sparse_irq_lock);
 }
+EXPORT_SYMBOL_GPL(irq_free_descs);
 
 /**
  * irq_alloc_descs - allocate and initialize a range of irq descriptors
@@ -351,6 +353,7 @@ err:
 	mutex_unlock(&sparse_irq_lock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(irq_alloc_descs);
 
 /**
  * irq_reserve_irqs - mark irqs allocated
-- 
1.7.3.4

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