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authorRafael J. Wysocki <rjw@sisk.pl>2008-08-18 21:38:00 +0200
committerJesse Barnes <jbarnes@virtuousgeek.org>2008-10-20 10:53:41 -0700
commit0235c4fc7fc6f621dc0dd89eba102ad5aa373390 (patch)
tree8947ae0efda2a1c9d69f3b6399d3e847307786a5 /arch/x86/pci/irq.c
parent3d137310245e4cdc3e8c8ba1bea2e145a87ae8e3 (diff)
PCI PM: Introduce function pci_wake_from_d3
Many device drivers use the following sequence of statements to enable the device to wake up the system while being in the D3_hot or D3_cold low power state: pci_enable_wake(pdev, PCI_D3hot, 1); pci_enable_wake(pdev, PCI_D3cold, 1); However, the second call is not necessary if the first one succeeds (the ordering of the statements above doesn't matter here) and it may even be harmful, because we are not supposed to enable PME# after the wake-up power has been enabled for the device. To allow drivers to overcome this problem, introduce function pci_wake_from_d3() that will enable the device to wake up the system from any of D3_hot and D3_cold as long as the wake-up from at least one of them is supported. Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/x86/pci/irq.c')
0 files changed, 0 insertions, 0 deletions