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Subject[PATCH 2/3] ACPI, PCI IRQ: add PCI_USING penalty for ISA interrupts
The change introduced in commit 103544d86976 ("ACPI,PCI,IRQ: reduce
resource requirements") removed PCI_USING penalty from
acpi_pci_link_allocate function as there is no longer a fixed size penalty
array for both PCI and IRQ interrupts.

We need to add the PCI_USING penalty for ISA interrupts too if the link is
in use and matches our ISA IRQ number.

Signed-off-by: Sinan Kaya <>
drivers/acpi/pci_link.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index f3792f4..06c2a11 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -620,6 +620,10 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
return -ENODEV;
} else {
+ if (link-> < ACPI_MAX_IRQS)
+ acpi_irq_penalty[link->] +=
printk(KERN_WARNING PREFIX "%s [%s] enabled at IRQ %d\n",
acpi_device_bid(link->device), link->;
 \ /
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