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Commit edf76f83 authored by Jonathan Cameron's avatar Jonathan Cameron Committed by Thomas Gleixner
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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: default avatarJonathan 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: default avatarThomas Gleixner <tglx@linutronix.de>
parent fe12bc2c

kernel/irq/chip.c

+2 −0
Original line number Diff line number Diff line
@@ -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.

kernel/irq/irqdesc.c

+3 −0
Original line number Diff line number Diff line
@@ -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 @@ irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node) 
	mutex_unlock(&sparse_irq_lock);

	return ret;

}

EXPORT_SYMBOL_GPL(irq_alloc_descs);



/**

 * irq_reserve_irqs - mark irqs allocated