From: Alan Stern <stern@rowland.harvard.edu>
Date: Fri, 19 Oct 2007 13:51:58 +0000 (-0400)
Subject: USB: fix interface sysfs file-creation bug
X-Git-Tag: v2.6.24-rc2~136^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=439a903a9663c0caa8094f3907ca60069d6c36e7;p=pandora-kernel.git

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>
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