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sh: intc: Handle early lookups of subgroup IRQs.

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If lookups happen while the radix node still points to a subgroup
mapping, an IRQ hasn't yet been made available for the specified id, so
error out accordingly. Once the slot is replaced with an IRQ mapping and
the tag is discarded, lookup can commence as normal.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2010-10-05 18:13:23 +09:00
parent c1e30ad98f
commit d74310d3b1
2 changed files with 25 additions and 11 deletions
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2
include/linux/sh_intc.h
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@ -117,7 +117,7 @@ struct intc_desc symbol __initdata = { \
int __init register_intc_controller(struct intc_desc *desc);
void reserve_intc_vectors(struct intc_vect *vectors, unsigned int nr_vecs);
int intc_set_priority(unsigned int irq, unsigned int prio);
unsigned int intc_irq_lookup(const char *chipname, intc_enum enum_id);
int intc_irq_lookup(const char *chipname, intc_enum enum_id);
void intc_finalize(void);
#ifdef CONFIG_INTC_USERIMASK