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authorDavid Brownell <david-b@pacbell.net>2007-05-07 21:26:17 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-12 03:02:08 +0400
commit56906c612e10b5e32a48ccbe8a3c08ab6acf5a28 (patch)
treee982b9cb97c5be164ee1dfd96e66013b3896d776 /Documentation
parente57571a07de8464f2e5911f87d2c8f29b0430fb7 (diff)
downloadlinux-56906c612e10b5e32a48ccbe8a3c08ab6acf5a28.tar.xz
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')
-rw-r--r--Documentation/pci.txt3
-rw-r--r--Documentation/power/pci.txt37
2 files changed, 0 insertions, 40 deletions
diff --git a/Documentation/pci.txt b/Documentation/pci.txt
index d38261b67905..7d3da30ff0b4 100644
--- a/Documentation/pci.txt
+++ b/Documentation/pci.txt
@@ -113,9 +113,6 @@ initialization with a pointer to a structure describing the driver
(Please see Documentation/power/pci.txt for descriptions
of PCI Power Management and the related functions.)
- enable_wake Enable device to generate wake events from a low power
- state.
-
shutdown Hook into reboot_notifier_list (kernel/sys.c).
Intended to stop any idling DMA operations.
Useful for enabling wake-on-lan (NIC) or changing
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
-------------------------