tree 06d6ba516b5786492808820a72b677e824674f58
parent a4f1409e7fd1b8b215508cfc80753e1b68bdf0b6
author Sarah Sharp <sarah.a.sharp@linux.intel.com> 1354663670 -0800
committer Sarah Sharp <sarah.a.sharp@linux.intel.com> 1355248650 -0800

USB: Prepare for refactoring by adding extra udev checks.

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>