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xen/x86: actually allocate legacy interrupts on PV guests
b4ff8389ed
is incomplete: relies on nr_legacy_irqs() to get the number
of legacy interrupts when actually nr_legacy_irqs() returns 0 after
probe_8259A(). Use NR_IRQS_LEGACY instead.
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
CC: stable@vger.kernel.org
This commit is contained in:
parent
971a69db7d
commit
702f926067
@ -491,8 +491,11 @@ int __init pci_xen_initial_domain(void)
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#endif
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__acpi_register_gsi = acpi_register_gsi_xen;
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__acpi_unregister_gsi = NULL;
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/* Pre-allocate legacy irqs */
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for (irq = 0; irq < nr_legacy_irqs(); irq++) {
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/*
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* Pre-allocate the legacy IRQs. Use NR_LEGACY_IRQS here
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* because we don't have a PIC and thus nr_legacy_irqs() is zero.
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*/
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for (irq = 0; irq < NR_IRQS_LEGACY; irq++) {
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int trigger, polarity;
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if (acpi_get_override_irq(irq, &trigger, &polarity) == -1)
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