path: root/Documentation
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authorAlan Stern <stern@rowland.harvard.edu>2009-11-13 11:53:59 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2009-12-11 11:55:21 -0800
commitfb34d53752d5bec5acc73422e462a9c68aeeaa2a (patch)
tree6a395f2a0246cd3d721753c60af13e8f9b2e9c41 /Documentation
parent576a362ad2103da481e1f6e13de01f33d3d4c7b1 (diff)
USB: remove the auto_pm flag
This patch (as1302) removes the auto_pm flag from struct usb_device. The flag's only purpose was to distinguish between autosuspends and external suspends, but that information is now available in the pm_message_t argument passed to suspend methods. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation')
1 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/usb/power-management.txt b/Documentation/usb/power-management.txt
index ad642615ad4c..8817368203d6 100644
--- a/Documentation/usb/power-management.txt
+++ b/Documentation/usb/power-management.txt
@@ -423,15 +423,16 @@ an URB had completed too recently.
External suspend calls should never be allowed to fail in this way,
only autosuspend calls. The driver can tell them apart by checking
-udev->auto_pm; this flag will be set to 1 for internal PM events
-(autosuspend or autoresume) and 0 for external PM events.
+the PM_EVENT_AUTO bit in the message.event argument to the suspend
+method; this bit will be set for internal PM events (autosuspend) and
+clear for external PM events.
Many of the ingredients in the autosuspend framework are oriented
towards interfaces: The usb_interface structure contains the
pm_usage_cnt field, and the usb_autopm_* routines take an interface
pointer as their argument. But somewhat confusingly, a few of the
-pieces (usb_mark_last_busy() and udev->auto_pm) use the usb_device
-structure instead. Drivers need to keep this straight; they can call
+pieces (i.e., usb_mark_last_busy()) use the usb_device structure
+instead. Drivers need to keep this straight; they can call
interface_to_usbdev() to find the device structure for a given