If the interrupt has been disabled, don't call the force_interrupt provider.
Doing so can result in an infinite runaway interrupt loop.
Signed-off-by: Mike Habeck <[EMAIL PROTECTED]>
---
This patch is based off the aegl/linux-2.6.git tree.
arch/ia64/sn/kernel/irq.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
Index: linux-2.6/arch/ia64/sn/kernel/irq.c
===================================================================
--- linux-2.6.orig/arch/ia64/sn/kernel/irq.c 2007-08-13 13:26:56.000000000
-0500
+++ linux-2.6/arch/ia64/sn/kernel/irq.c 2007-08-13 15:28:39.102454968 -0500
@@ -398,7 +398,10 @@ sn_call_force_intr_provider(struct sn_ir
struct sn_pcibus_provider *pci_provider;
pci_provider = sn_pci_provider[sn_irq_info->irq_bridge_type];
- if (pci_provider && pci_provider->force_interrupt)
+
+ /* Don't force an interrupt if the irq has been disabled */
+ if (!(irq_desc[sn_irq_info->irq_irq].status & IRQ_DISABLED) &&
+ pci_provider && pci_provider->force_interrupt)
(*pci_provider->force_interrupt)(sn_irq_info);
}
-
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