diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2008-12-27 07:38:15 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-27 17:52:07 +0100 |
| commit | 12026ea16a618b289fcf457661aed24f57323a20 (patch) | |
| tree | 69375cb891e5d9593fc7bc9fdd87be952e4325e7 /kernel/irq | |
| parent | sparseirq: set lock_class for legacy irq when sparse_irq is selected (diff) | |
| download | linux-12026ea16a618b289fcf457661aed24f57323a20.tar.xz linux-12026ea16a618b289fcf457661aed24f57323a20.zip | |
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>
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | 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 e1cf4e391cae..157c04c3b158 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; |