tree 81eea69b15307e96afb63d676f9027268a67cca8
parent f0a664bbd1839fbe9f57564983f39bfc6c6f931d
author Tejun Heo <htejun@gmail.com> 1184050543 +0900
committer Jeff Garzik <jeff@garzik.org> 1185310501 -0400

ata_piix: fix suspend/resume for some TOSHIBA laptops

ACPI implementations in several TOSHIBA laptops are weird and burn cpu
cycles for tens of seconds while trying to suspend if the PCI device
for the ATA controller is disabled when the ACPI suspend is called.

This patch uses DMI to match those machines and bypass device disable
on those machines during suspend.  As the device needs to be put into
enabled state on resume without affecting PCI enable count, matching
resume callback uses __pci_reenable_device().

This bug is reported in bugzilla bug 7780.

  http://bugzilla.kernel.org/show_bug.cgi?id=7780

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>