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Commit 1d008353 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq: Remove irq_reserve_irq[s] 



No more users. And it's not going to come back. If you need
hotplugable irq chips, use irq domains.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Reviewed-and-acked-by: default avatarGrant Likely <grant.likely@linaro.org>
Tested-by: default avatarTony Luck <tony.luck@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20140507154340.302183048@linutronix.de


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent f63b6a05

include/linux/irq.h

+0 −7
Original line number Diff line number Diff line
@@ -617,18 +617,11 @@ int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node, 
	irq_alloc_descs(-1, from, cnt, node)



void irq_free_descs(unsigned int irq, unsigned int cnt);

int irq_reserve_irqs(unsigned int from, unsigned int cnt);



static inline void irq_free_desc(unsigned int irq)

{

	irq_free_descs(irq, 1);

}



static inline int irq_reserve_irq(unsigned int irq)

{

	return irq_reserve_irqs(irq, 1);

}



#ifdef CONFIG_GENERIC_IRQ_LEGACY_ALLOC_HWIRQ

unsigned int irq_alloc_hwirqs(int cnt, int node);

static inline unsigned int irq_alloc_hwirq(int node)

kernel/irq/irqdesc.c

+0 −25
Original line number Diff line number Diff line
@@ -454,31 +454,6 @@ void irq_free_hwirqs(unsigned int from, int cnt) 
EXPORT_SYMBOL_GPL(irq_free_hwirqs);

#endif



/**

 * irq_reserve_irqs - mark irqs allocated

 * @from:	mark from irq number

 * @cnt:	number of irqs to mark

 *

 * Returns 0 on success or an appropriate error code

 */

int irq_reserve_irqs(unsigned int from, unsigned int cnt)

{

	unsigned int start;

	int ret = 0;



	if (!cnt || (from + cnt) > nr_irqs)

		return -EINVAL;



	mutex_lock(&sparse_irq_lock);

	start = bitmap_find_next_zero_area(allocated_irqs, nr_irqs, from, cnt, 0);

	if (start == from)

		bitmap_set(allocated_irqs, start, cnt);

	else

		ret = -EEXIST;

	mutex_unlock(&sparse_irq_lock);

	return ret;

}



/**

 * irq_get_next_irq - get next allocated irq number

 * @offset:	where to start the search