tree ed6da5090918e824a2376f518a605e78ab0e5758
parent b22817b3c81cdb18ffe3d2debfee968731a8b5f4
author Alan Stern <stern@rowland.harvard.edu> 1192801918 -0400
committer Greg Kroah-Hartman <gregkh@suse.de> 1193339924 -0700

USB: fix interface sysfs file-creation bug

This patch (as1005) fixes a rather subtle problem.  When
usb_set_configuration() registers the interfaces and their files in
sysfs, it doesn't expect those files to exist already.  But when an
interface is registered, its driver may call usb_set_interface() and
thereby cause the sysfs files to be created.  The result is an error
when usb_set_configuration() goes on to create those same files again.

The (not-so-great) solution is to have usb_set_configuration() remove
any existing files before creating them.

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