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powerpc: Use new irq allocator 

Use the new functions and free the descriptor when the virq is
destroyed.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Thomas Gleixner 2011-01-21 06:12:30 +00:00 committed by Benjamin Herrenschmidt
parent 089fb442f3
commit a9d8946b4a
1 changed files with 9 additions and 8 deletions
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17
arch/powerpc/kernel/irq.c
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@ -678,16 +678,15 @@ void irq_set_virq_count(unsigned int count)
static int irq_setup_virq(struct irq_host *host, unsigned int virq,
irq_hw_number_t hwirq)
{
struct irq_desc *desc;
int res;
desc = irq_to_desc_alloc_node(virq, 0);
if (!desc) {
res = irq_alloc_desc_at(virq, 0);
if (res != virq) {
pr_debug("irq: -> allocating desc failed\n");
goto error;
}
/* Clear IRQ_NOREQUEST flag */
desc->status &= ~IRQ_NOREQUEST;
irq_clear_status_flags(virq, IRQ_NOREQUEST);
/* map it */
smp_wmb();
@ -696,11 +695,13 @@ static int irq_setup_virq(struct irq_host *host, unsigned int virq,
if (host->ops->map(host, virq, hwirq)) {
pr_debug("irq: -> mapping failed, freeing\n");
goto error;
goto errdesc;
}
return 0;
errdesc:
irq_free_descs(virq, 1);
error:
irq_free_virt(virq, 1);
return -1;
@ -879,9 +880,9 @@ void irq_dispose_mapping(unsigned int virq)
smp_mb();
irq_map[virq].hwirq = host->inval_irq;
/* Set some flags */
irq_to_desc(virq)->status |= IRQ_NOREQUEST;
irq_set_status_flags(virq, IRQ_NOREQUEST);
irq_free_descs(virq, 1);
/* Free it */
irq_free_virt(virq, 1);
}