usbcore: store each usb_device's level in the tree

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This patch (as778) adds a field to struct usb_device to store the
device's level in the USB tree.  In itself this number isn't really
important.  But the overhead is very low, and in a later patch it will
be used for preventing bogus warnings from the lockdep checker.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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Alan Stern 2006-08-30 15:46:48 -04:00 • committed by Greg Kroah-Hartman

parent d1ad4ea331

commit b6956ffa59

2 changed files with 2 additions and 0 deletions

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1

drivers/usb/core/hub.c

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1

include/linux/usb.h

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