Stefano Stabellini
2010-May-10 14:20 UTC
[Xen-devel] [PATCH 04/11] Fix find_unbound_irq in presence of ioapic irqs.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
drivers/xen/events.c | 11 ++++++++++-
1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index bb04824..cd609f4 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -335,9 +335,18 @@ static int find_unbound_irq(void)
int irq;
struct irq_desc *desc;
- for (irq = 0; irq < nr_irqs; irq++)
+ for (irq = 0; irq < nr_irqs; irq++) {
+ desc = irq_to_desc(irq);
+ /* only 0->15 have init''d desc; handle irq > 16 */
+ if (desc == NULL)
+ break;
+ if (desc->chip == &no_irq_chip)
+ break;
+ if (desc->chip != &xen_dynamic_chip)
+ continue;
if (irq_info[irq].type == IRQT_UNBOUND)
break;
+ }
if (irq == nr_irqs)
panic("No available IRQ to bind to: increase nr_irqs!\n");
--
1.5.4.3
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