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| author | Alan Stern <stern@rowland.harvard.edu> | 2007-05-30 15:39:33 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-12 16:34:30 -0700 |
| commit | b41a60eca833d76593d4dac8a59f5c38714194ee (patch) | |
| tree | a7c5cf721d9978503c3c8c88183747cf954b8733 /include/linux/usb.h | |
| parent | 54515fe528d8c6f9bfaf7d0b9fffb908deecad78 (diff) | |
| download | lwn-b41a60eca833d76593d4dac8a59f5c38714194ee.tar.gz lwn-b41a60eca833d76593d4dac8a59f5c38714194ee.zip | |
USB: add power/persist device attribute
This patch (as920) adds an extra level of protection to the
USB-Persist facility. Now it will apply by default only to hubs; for
all other devices the user must enable it explicitly by setting the
power/persist device attribute.
The disconnect_all_children() routine in hub.c has been removed and
its code placed inline. This is the way it was originally as part of
hub_pre_reset(); the revised usage in hub_reset_resume() is
sufficiently different that the code can no longer be shared.
Likewise, mark_children_for_reset() is now inline as part of
hub_reset_resume(). The end result looks much cleaner than before.
The sysfs interface is updated to add the new attribute file, and
there are corresponding documentation updates.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/usb.h')
| -rw-r--r-- | include/linux/usb.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h index bde8c65e2bfc..efce9a4c511c 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -404,6 +404,7 @@ struct usb_device { unsigned auto_pm:1; /* autosuspend/resume in progress */ unsigned do_remote_wakeup:1; /* remote wakeup should be enabled */ unsigned reset_resume:1; /* needs reset instead of resume */ + unsigned persist_enabled:1; /* USB_PERSIST enabled for this dev */ unsigned autosuspend_disabled:1; /* autosuspend and autoresume */ unsigned autoresume_disabled:1; /* disabled by the user */ #endif |