* [PATCH] xen: make sure irq_desc is allocated for interrupts
@ 2008-12-17 21:42 Jeremy Fitzhardinge
2008-12-18 11:48 ` Ingo Molnar
0 siblings, 1 reply; 2+ messages in thread
From: Jeremy Fitzhardinge @ 2008-12-17 21:42 UTC (permalink / raw)
To: Ingo Molnar; +Cc: the arch/x86 maintainers, Linux Kernel Mailing List
Impact: bugfix
Make sure all Xen irqs have an irq_desc.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
drivers/xen/events.c | 5 +++++
1 file changed, 5 insertions(+)
===================================================================
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -233,6 +233,7 @@
static int find_unbound_irq(void)
{
int irq;
+ struct irq_desc *desc;
/* Only allocate from dynirq range */
for (irq = 0; irq < nr_irqs; irq++)
@@ -242,6 +243,10 @@
if (irq == nr_irqs)
panic("No available IRQ to bind to: increase nr_irqs!\n");
+ desc = irq_to_desc_alloc_cpu(irq, 0);
+ if (WARN_ON(desc == NULL))
+ return -1;
+
return irq;
}
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2008-12-17 21:42 [PATCH] xen: make sure irq_desc is allocated for interrupts Jeremy Fitzhardinge
2008-12-18 11:48 ` Ingo Molnar
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