From ecc21ebe603af31f172c43b8b261df79040790ef Mon Sep 17 00:00:00 2001 From: David Shaohua Li Date: Wed, 3 Aug 2005 11:00:11 -0400 Subject: [PATCH] [ACPI] PCI interrupt link suspend/resume - revert to 2.6.12 behaviour This patch disables the PCI Interrupt Link refernece counts, which should not co-exist with the 2.6.12 irq_router.resume method or else a double acpi_pci_link_set() could result on resume. Signed-off-by: David Shaohua Li Signed-off-by: Len Brown --- drivers/acpi/pci_link.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index 6a29610edc11..0091dbdf7ef9 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -692,7 +692,18 @@ acpi_pci_link_free_irq(acpi_handle handle) return_VALUE(-1); } +#ifdef FUTURE_USE + /* + * The Link reference count allows us to _DISable an unused link + * and suspend time, and set it again on resume. + * However, 2.6.12 still has irq_router.resume + * which blindly restores the link state. + * So we disable the reference count method + * to prevent duplicate acpi_pci_link_set() + * which would harm some systems + */ link->refcnt --; +#endif ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Link %s is dereferenced\n", acpi_device_bid(link->device))); -- 2.20.1