The patch titled
usb: power-management.txt - disconnect clarification
has been added to the -mm tree. Its filename is
usb-power-managementtxt-disconnect-clarification.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: usb: power-management.txt - disconnect clarification
From: Tilman Schmidt <tilman@xxxxxxx>
Add a paragraph to Documentation/usb/power-management.txt about the
interaction between suspend and disconnect.
Signed-off-by: Tilman Schmidt <tilman@xxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/usb/power-management.txt | 6 ++++++
1 file changed, 6 insertions(+)
diff -puN Documentation/usb/power-management.txt~usb-power-managementtxt-disconnect-clarification Documentation/usb/power-management.txt
--- a/Documentation/usb/power-management.txt~usb-power-managementtxt-disconnect-clarification
+++ a/Documentation/usb/power-management.txt
@@ -278,6 +278,12 @@ optional. The methods' jobs are quite s
(although the interfaces will be in the same altsettings as
before the suspend).
+If the device is disconnected or powered down while it is suspended,
+the disconnect method will be called instead of the resume or
+reset_resume method. This will also happen if the system is resumed
+from hibernation, as the device could have been disconnected without
+the system being able to detect it.
+
The reset_resume method is used by the USB Persist facility (see
Documentation/usb/persist.txt) and it can also be used under certain
circumstances when CONFIG_USB_PERSIST is not enabled. Currently, if a
_
Patches currently in -mm which might be from tilman@xxxxxxx are
usb-power-managementtxt-disconnect-clarification.patch
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