IRQ 0 is reserved and should not be assigned to pci device.

Signed-off-by: Bin Meng bmeng.cn@gmail.com ---

arch/x86/cpu/pci.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/arch/x86/cpu/pci.c b/arch/x86/cpu/pci.c index fdfd5f7..f8da080 100644 --- a/arch/x86/cpu/pci.c +++ b/arch/x86/cpu/pci.c @@ -172,6 +172,8 @@ void pci_assign_irqs(int bus, int device, u8 irq[4]) continue;

line = irq[pin - 1]; + if (!line) + continue;

debug("Assigning IRQ %d to PCI device %d.%x.%d (INT%c)\n", line, bus, device, func, 'A' + pin - 1);