From: David Shaohua Li Date: Wed, 3 Aug 2005 15:00:11 +0000 (-0400) Subject: [ACPI] PCI interrupt link suspend/resume - revert to 2.6.12 behaviour X-Git-Tag: v2.6.13-rc6~73^2^2~3 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=ecc21ebe603af31f172c43b8b261df79040790ef;p=linux-2.6-omap-h63xx.git [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 --- diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index 6a29610edc1..0091dbdf7ef 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)));