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Subjectfix stale PCI pm docs

This fixes u32 vs. pm_message_t confusion in documentation, and
removes references to no-longer-existing (*save_state), too. With
exception of USB (I hope David will fix/apply my patch), this should
fix last piece of this confusion... famous last words.

Please apply,

Signed-off-by: Pavel Machek <>

--- clean-mm/Documentation/power/pci.txt 2004-12-25 13:34:57.000000000 +0100
+++ linux-mm/Documentation/power/pci.txt 2005-04-05 12:13:16.000000000 +0200
@@ -165,40 +165,9 @@
These functions are intended for use by individual drivers, and are defined in
struct pci_driver:

- int (*save_state) (struct pci_dev *dev, u32 state);
- int (*suspend) (struct pci_dev *dev, u32 state);
+ int (*suspend) (struct pci_dev *dev, pm_message_t state);
int (*resume) (struct pci_dev *dev);
- int (*enable_wake) (struct pci_dev *dev, u32 state, int enable);
-if (dev->driver && dev->driver->save_state)
- dev->driver->save_state(dev,state);
-The driver should use this callback to save device state. It should take into
-account the current state of the device and the requested state in order to
-avoid any unnecessary operations.
-For example, a video card that supports all 4 states (D0-D3), all controller
-context is preserved when entering D1, but the screen is placed into a low power
-state (blanked).
-The driver can also interpret this function as a notification that it may be
-entering a sleep state in the near future. If it knows that the device cannot
-enter the requested state, either because of lack of support for it, or because
-the device is middle of some critical operation, then it should fail.
-This function should not be used to set any state in the device or the driver
-because the device may not actually enter the sleep state (e.g. another driver
-later causes causes a global state transition to fail).
-Note that in intermediate low power states, a device's I/O and memory spaces may
-be disabled and may not be available in subsequent transitions to lower power
+ int (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable);

People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
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