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authorJonathan Cameron <jic23@cam.ac.uk>2011-05-18 10:39:04 +0100
committerThomas Gleixner <tglx@linutronix.de>2011-05-18 14:59:08 +0200
commitedf76f8307c350bcb81f0c760118a991b3e62956 (patch)
tree35adb6aa29f61f64f5841b1ccb2e6a50eb250529
parentfe12bc2c996d3e492b2920e32ac79f7bbae3e15d (diff)
downloadlwn-edf76f8307c350bcb81f0c760118a991b3e62956.tar.gz
lwn-edf76f8307c350bcb81f0c760118a991b3e62956.zip
irq: Export functions to allow modular irq drivers
Export handle_simple_irq, irq_modify_status, irq_alloc_descs, irq_free_descs and generic_handle_irq to allow their usage in modules. First user is IIO, which wants to be built modular, but needs to be able to create irq chips, allocate and configure interrupt descriptors and handle demultiplexing interrupts. [ tglx: Moved the uninlinig of generic_handle_irq to a separate patch ] Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Link: http://lkml.kernel.org/r/%3C1305711544-505-1-git-send-email-jic23%40cam.ac.uk%3E Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--kernel/irq/chip.c2
-rw-r--r--kernel/irq/irqdesc.c3
2 files changed, 5 insertions, 0 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 52d856d513ff..d5a3009da71a 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
@@ -613,6 +614,7 @@ 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 9f65b0225d6a..886e80347b32 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -304,6 +304,7 @@ int generic_handle_irq(unsigned int irq)
generic_handle_irq_desc(irq, desc);
return 0;
}
+EXPORT_SYMBOL_GPL(generic_handle_irq);
/* Dynamic interrupt handling */
@@ -326,6 +327,7 @@ 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
@@ -366,6 +368,7 @@ err:
mutex_unlock(&sparse_irq_lock);
return ret;
}
+EXPORT_SYMBOL_GPL(irq_alloc_descs);
/**
* irq_reserve_irqs - mark irqs allocated