From: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Date: Fri, 8 Mar 2013 00:24:47 +0000 (-0800)
Subject: USB: Prepare for refactoring by adding extra udev checks.
X-Git-Tag: v3.2.41~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5bd7c59c9340d87bfd271bed1091aace6a36185b;p=pandora-kernel.git

USB: Prepare for refactoring by adding extra udev checks.

commit 2d4fa940f99663c82ba55b2244638833b388e4e2 upstream.

The next patch will refactor the hub port code to rip out the recursive
call to hub_port_reset on a failed hot reset.  In preparation for that,
make sure all code paths can deal with being called with a NULL udev.
The usb_device will not be valid if warm reset was issued because a port
transitioned to the Inactive or Compliance Mode on a device connect.

This patch should have no effect on current behavior.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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