From: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Date: Thu, 5 Jul 2012 21:09:30 +0000 (-0700)
Subject: USB: Fix LPM disable count mismatch on driver unbind.
X-Git-Tag: v3.6-rc1~101^2~24^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=249719121bc2b841bdfcab5eb21b10d8b871743b;p=pandora-kernel.git

USB: Fix LPM disable count mismatch on driver unbind.

When a user runs `echo 0 > bConfigurationValue` for a USB 3.0 device,
usb_disable_device() is called.  This function disables all drivers,
deallocates interfaces, and sets the device configuration value to 0
(unconfigured).

With the new scheme to ensure that unconfigured devices have LPM
disabled, usb_disable_device() must call usb_unlocked_disable_lpm() once
it unconfigures the device.

This commit should be backported to kernels as old as 3.5, that contain
the commit 8306095fd2c1100e8244c09bf560f97aca5a311d "USB: Disable USB
3.0 LPM in critical sections."

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org
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