in sh calling path:
        register_intc_controller
                ==> irq_create_identity_mapping/irq_create_strict_mappins
                        ==>irq_alloc_desc: it will set bits on allocate_irq
                ==> intc_register_irq
                        ==> irq_reserve_irq: set bits again

so we can kill this irq_reserve_irq calling.

-v2: Fix comment style according to Sergei Shtylyov.

Signed-off-by: Yinghai Lu <[email protected]>
Cc: Simon Horman <[email protected]>
Cc: Magnus Damm <[email protected]>
Cc: [email protected]
Acked-by: Simon Horman <[email protected]>
---
 drivers/sh/intc/core.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c
index 8f32a13..d146ce1 100644
--- a/drivers/sh/intc/core.c
+++ b/drivers/sh/intc/core.c
@@ -80,12 +80,7 @@ static void __init intc_register_irq(struct intc_desc *desc,
        unsigned int data[2], primary;
        unsigned long flags;
 
-       /*
-        * Register the IRQ position with the global IRQ map, then insert
-        * it in to the radix tree.
-        */
-       irq_reserve_irq(irq);
-
+       /* Insert it in to the radix tree. */
        raw_spin_lock_irqsave(&intc_big_lock, flags);
        radix_tree_insert(&d->tree, enum_id, intc_irq_xlate_get(irq));
        raw_spin_unlock_irqrestore(&intc_big_lock, flags);
-- 
1.8.4.5

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