diff options
| author | Stefano Stabellini | 2016-04-20 14:15:01 +0100 |
|---|---|---|
| committer | David Vrabel | 2016-05-24 12:58:19 +0100 |
| commit | 702f926067d2a4b28c10a3c41a1172dd62d9e735 (patch) | |
| tree | 72682eb17139d59c83a66d3fdf03b30c31775c89 | |
| parent | 971a69db7dc02faaeed325c195f5db5da597cb58 (diff) | |
xen/x86: actually allocate legacy interrupts on PV guests
b4ff8389ed14 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
| -rw-r--r-- | arch/x86/pci/xen.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index beac4dfdade6..349b8ce92bf2 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -491,8 +491,11 @@ int __init pci_xen_initial_domain(void) #endif __acpi_register_gsi = acpi_register_gsi_xen; __acpi_unregister_gsi = NULL; - /* Pre-allocate legacy irqs */ - for (irq = 0; irq < nr_legacy_irqs(); irq++) { + /* + * Pre-allocate the legacy IRQs. Use NR_LEGACY_IRQS here + * because we don't have a PIC and thus nr_legacy_irqs() is zero. + */ + for (irq = 0; irq < NR_IRQS_LEGACY; irq++) { int trigger, polarity; if (acpi_get_override_irq(irq, &trigger, &polarity) == -1) |