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Commit 352b0ef5 authored by Mike Habeck's avatar Mike Habeck Committed by Tony Luck
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[IA64] SGI Altix : fix a force_interrupt bug on altix 



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: default avatarMike Habeck <habeck@sgi.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent 709ae930

arch/ia64/sn/kernel/irq.c

+4 −1
Original line number Diff line number Diff line
@@ -405,7 +405,10 @@ sn_call_force_intr_provider(struct sn_irq_info *sn_irq_info) 
	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);

}