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-rw-r--r--arch/sh/kernel/irq.c6
-rw-r--r--drivers/sh/intc/core.c2
-rw-r--r--drivers/sh/intc/dynamic.c82
-rw-r--r--include/linux/sh_intc.h3
4 files changed, 9 insertions, 84 deletions
diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index 9dc447db8a44..d9f3b6e7c7cb 100644
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -273,12 +273,6 @@ void __init init_IRQ(void)
{
plat_irq_setup();
- /*
- * Pin any of the legacy IRQ vectors that haven't already been
- * grabbed by the platform
- */
- reserve_irq_legacy();
-
/* Perform the machine specific initialisation */
if (sh_mv.mv_init_irq)
sh_mv.mv_init_irq();
diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c
index 8f3c27e9f9e2..0801089828e7 100644
--- a/drivers/sh/intc/core.c
+++ b/drivers/sh/intc/core.c
@@ -78,7 +78,7 @@ static void __init intc_register_irq(struct intc_desc *desc,
* Register the IRQ position with the global IRQ map, then insert
* it in to the radix tree.
*/
- reserve_irq_vector(irq);
+ irq_reserve_irqs(irq, 1);
raw_spin_lock_irqsave(&intc_big_lock, flags);
radix_tree_insert(&d->tree, enum_id, intc_irq_xlate_get(irq));
diff --git a/drivers/sh/intc/dynamic.c b/drivers/sh/intc/dynamic.c
index e994c7ed916e..4187cce20ffd 100644
--- a/drivers/sh/intc/dynamic.c
+++ b/drivers/sh/intc/dynamic.c
@@ -17,7 +17,7 @@
#include "internals.h" /* only for activate_irq() damage.. */
/*
- * The intc_irq_map provides a global map of bound IRQ vectors for a
+ * The IRQ bitmap provides a global map of bound IRQ vectors for a
* given platform. Allocation of IRQs are either static through the CPU
* vector map, or dynamic in the case of board mux vectors or MSI.
*
@@ -27,104 +27,38 @@
* when dynamically creating IRQs, as well as tying in to otherwise
* unused irq_desc positions in the sparse array.
*/
-static DECLARE_BITMAP(intc_irq_map, NR_IRQS);
-static DEFINE_RAW_SPINLOCK(vector_lock);
/*
* Dynamic IRQ allocation and deallocation
*/
unsigned int create_irq_nr(unsigned int irq_want, int node)
{
- unsigned int irq = 0, new;
- unsigned long flags;
-
- raw_spin_lock_irqsave(&vector_lock, flags);
-
- /*
- * First try the wanted IRQ
- */
- if (test_and_set_bit(irq_want, intc_irq_map) == 0) {
- new = irq_want;
- } else {
- /* .. then fall back to scanning. */
- new = find_first_zero_bit(intc_irq_map, nr_irqs);
- if (unlikely(new == nr_irqs))
- goto out_unlock;
-
- __set_bit(new, intc_irq_map);
- }
-
- raw_spin_unlock_irqrestore(&vector_lock, flags);
-
- irq = irq_alloc_desc_at(new, node);
- if (unlikely(irq != new)) {
- pr_err("can't get irq_desc for %d\n", new);
+ int irq = irq_alloc_desc_at(irq_want, node);
+ if (irq < 0)
return 0;
- }
activate_irq(irq);
- return 0;
-
-out_unlock:
- raw_spin_unlock_irqrestore(&vector_lock, flags);
- return 0;
+ return irq;
}
int create_irq(void)
{
- int nid = cpu_to_node(smp_processor_id());
- int irq;
-
- irq = create_irq_nr(NR_IRQS_LEGACY, nid);
- if (irq == 0)
- irq = -1;
+ int irq = irq_alloc_desc(numa_node_id());
+ if (irq >= 0)
+ activate_irq(irq);
return irq;
}
void destroy_irq(unsigned int irq)
{
- unsigned long flags;
-
irq_free_desc(irq);
-
- raw_spin_lock_irqsave(&vector_lock, flags);
- __clear_bit(irq, intc_irq_map);
- raw_spin_unlock_irqrestore(&vector_lock, flags);
-}
-
-int reserve_irq_vector(unsigned int irq)
-{
- unsigned long flags;
- int ret = 0;
-
- raw_spin_lock_irqsave(&vector_lock, flags);
- if (test_and_set_bit(irq, intc_irq_map))
- ret = -EBUSY;
- raw_spin_unlock_irqrestore(&vector_lock, flags);
-
- return ret;
}
void reserve_intc_vectors(struct intc_vect *vectors, unsigned int nr_vecs)
{
- unsigned long flags;
int i;
- raw_spin_lock_irqsave(&vector_lock, flags);
for (i = 0; i < nr_vecs; i++)
- __set_bit(evt2irq(vectors[i].vect), intc_irq_map);
- raw_spin_unlock_irqrestore(&vector_lock, flags);
-}
-
-void reserve_irq_legacy(void)
-{
- unsigned long flags;
- int i, j;
-
- raw_spin_lock_irqsave(&vector_lock, flags);
- j = find_first_bit(intc_irq_map, nr_irqs);
- for (i = 0; i < j; i++)
- __set_bit(i, intc_irq_map);
- raw_spin_unlock_irqrestore(&vector_lock, flags);
+ irq_reserve_irqs(evt2irq(vectors[i].vect), 1);
}
diff --git a/include/linux/sh_intc.h b/include/linux/sh_intc.h
index b4f183a31f13..f656d1a43dc0 100644
--- a/include/linux/sh_intc.h
+++ b/include/linux/sh_intc.h
@@ -129,7 +129,4 @@ static inline int register_intc_userimask(unsigned long addr)
}
#endif
-int reserve_irq_vector(unsigned int irq);
-void reserve_irq_legacy(void);
-
#endif /* __SH_INTC_H */