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[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>
This commit is contained in:
David Shaohua Li 2005-08-03 11:00:11 -04:00 committed by Len Brown
parent 3d35600a9d
commit ecc21ebe60
1 changed files with 11 additions and 0 deletions
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11
drivers/acpi/pci_link.c
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@ -692,7 +692,18 @@ acpi_pci_link_free_irq(acpi_handle handle)
return_VALUE(-1); 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 --; link->refcnt --;
#endif
ACPI_DEBUG_PRINT((ACPI_DB_INFO, ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Link %s is dereferenced\n", acpi_device_bid(link->device))); "Link %s is dereferenced\n", acpi_device_bid(link->device)));