Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=12026e...
Commit: 12026ea16a618b289fcf457661aed24f57323a20
Parent: fa6beb37b0d9bc00f90f11154eeed9502d8b0a37
Author: Yinghai Lu <yinghai@kernel.org>
AuthorDate: Fri Dec 26 22:38:15 2008 -0800
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Sat Dec 27 17:52:07 2008 +0100
sparseirq: fix hang with !SPARSE_IRQ
Impact: fix hang
Suresh report his two sockets system only works with SPARSE_IRQ enable
it turns out we miss the setting desc->irq
so provide early_irq_init() even !SPARSE_IRQ to set desc->irq
Reported-by: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
kernel/irq/handle.c | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index e1cf4e3..157c04c 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -218,6 +218,21 @@ struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
}
};
+int __init early_irq_init(void)
+{
+ struct irq_desc *desc;
+ int count;
+ int i;
+
+ desc = irq_desc;
+ count = ARRAY_SIZE(irq_desc);
+
+ for (i = 0; i < count; i++)
+ desc[i].irq = i;
+
+ return arch_early_irq_init();
+}
+
struct irq_desc *irq_to_desc(unsigned int irq)
{
return (irq < NR_IRQS) ? irq_desc + irq : NULL;
--
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