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From: Warner Losh <imp@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
Subject: PERFORCE change 39284 for review
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http://perforce.freebsd.org/chv.cgi?CH=39284

Change 39284 by imp@imp_koguchi on 2003/10/06 19:46:55

	update a little

Affected files ...

.. //depot/projects/power/notes#7 edit

Differences ...

==== //depot/projects/power/notes#7 (text+ko) ====

@@ -51,14 +51,9 @@
   # methods should be unique.  Command interfaces to userland should dispatch
   # the right method.  Otherwise we've reinvented ioctl :-)
 - convert to a model of suspending the device via device_suspend()/resume()
-  rather than detach()/attach()
+  rather than detach()/attach() for turning devices on/off.
   - This may require fixes to drivers so that they continue to function
     appropriately when their hardware has been suspended
-  # NO.  This cannot be implemented reliably.  pccard bridges do not tell
-  # us that a device has been removed while the system was asleep.  That's
-  # why we detach/reattach on suspend/resume for devices on pccard/cardbus
-  # bridges.  usb bridges can tell about this, and they properly use the
-  # suspend/resume functions.
 
 The second stage will be to make the powering off of devices more automated.
 This is still in early design stage.  It may involve a powerd, it may