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| author | David Brownell | 2007-05-07 19:26:17 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2007-07-12 01:02:08 +0200 |
| commit | 56906c612e10b5e32a48ccbe8a3c08ab6acf5a28 (patch) | |
| tree | e982b9cb97c5be164ee1dfd96e66013b3896d776 /Documentation/power | |
| parent | PCI: unexport pci_proc_attach_device (diff) | |
| download | kernel-qcow2-linux-56906c612e10b5e32a48ccbe8a3c08ab6acf5a28.tar.gz kernel-qcow2-linux-56906c612e10b5e32a48ccbe8a3c08ab6acf5a28.tar.xz kernel-qcow2-linux-56906c612e10b5e32a48ccbe8a3c08ab6acf5a28.zip | |
PCI: remove useless pci driver method
Remove pointless and never-called enable_wake() hook from pci_driver and
from documentation. Evidently this was introduced in the 2.4.6 kernel,
but there's no evidence it was ever called; and it was rarely implemented.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/power')
| -rw-r--r-- | Documentation/power/pci.txt | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/Documentation/power/pci.txt b/Documentation/power/pci.txt index e00b099a4b86..dd8fe43888d3 100644 --- a/Documentation/power/pci.txt +++ b/Documentation/power/pci.txt @@ -164,7 +164,6 @@ struct pci_driver: int (*suspend) (struct pci_dev *dev, pm_message_t state); int (*resume) (struct pci_dev *dev); - int (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable); suspend @@ -251,42 +250,6 @@ The driver should update the current_state field in its pci_dev structure in this function, except for PM-capable devices when pci_set_power_state is used. -enable_wake ------------ - -Usage: - -if (dev->driver && dev->driver->enable_wake) - dev->driver->enable_wake(dev,state,enable); - -This callback is generally only relevant for devices that support the PCI PM -spec and have the ability to generate a PME# (Power Management Event Signal) -to wake the system up. (However, it is possible that a device may support -some non-standard way of generating a wake event on sleep.) - -Bits 15:11 of the PMC (Power Mgmt Capabilities) Register in a device's -PM Capabilities describe what power states the device supports generating a -wake event from: - -+------------------+ -| Bit | State | -+------------------+ -| 11 | D0 | -| 12 | D1 | -| 13 | D2 | -| 14 | D3hot | -| 15 | D3cold | -+------------------+ - -A device can use this to enable wake events: - - pci_enable_wake(dev,state,enable); - -Note that to enable PME# from D3cold, a value of 4 should be passed to -pci_enable_wake (since it uses an index into a bitmask). If a driver gets -a request to enable wake events from D3, two calls should be made to -pci_enable_wake (one for both D3hot and D3cold). - A reference implementation ------------------------- |