From: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Date: Fri, 30 Apr 2010 22:37:56 +0000 (-0700)
Subject: USB: xhci: Avoid double free after streams are disabled.
X-Git-Tag: v2.6.35-rc1~471^2~117
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8a007748fbadb8317d0af289f3bca5694354d63a;p=pandora-kernel.git

USB: xhci: Avoid double free after streams are disabled.

When a device is disconnected, xhci_free_virt_device() is called.  Ramya
found that if the device had streams enabled, and then the driver freed
the streams with a call to usb_free_streams(), then about a minute after
he had called this, his machine crashed with a Bad DMA error.  It turns
out that xhci_free_virt_device() would attempt to free the endpoint's
stream_info data structure if it wasn't NULL, and the free streams
function was not setting it to NULL after freeing it.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Tested-by: Ramya Desai <ramya.desai@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

Reading git-diff-tree failed