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| author | David Shaohua Li <shaohua.li@intel.com> | 2005-08-03 11:00:11 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2005-08-03 11:04:10 -0400 |
| commit | ecc21ebe603af31f172c43b8b261df79040790ef (patch) | |
| tree | d2468578cb327adbd3d69feb610a79b8b8a0f84d | |
| parent | 3d35600a9de8e2816d0e3726f64b7271af6fdda4 (diff) | |
| download | linux-3.10-ecc21ebe603af31f172c43b8b261df79040790ef.tar.gz linux-3.10-ecc21ebe603af31f172c43b8b261df79040790ef.tar.bz2 linux-3.10-ecc21ebe603af31f172c43b8b261df79040790ef.zip | |
[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 <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
| -rw-r--r-- | drivers/acpi/pci_link.c | 11 |
1 files changed, 11 insertions, 0 deletions
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))); |