tree 37c6e9a1055486cf2e413be5402ef6ae30cdcbbb
parent 331de00a64e5027365145bdf51da27b9ce15dfd5
author Vladimir Murzin <murzin.v@gmail.com> 1365532411 +0400
committer Sarah Sharp <sarah.a.sharp@linux.intel.com> 1369412087 -0700

xhci: fix list access before init

If for whatever reason we fall into fail path in xhci_mem_init()
before bw table gets initialized we may access the uninitialized lists
in xhci_mem_cleanup().

Check for bw table before traversing lists in cleanup routine.

This patch should be backported to kernels as old as 3.2, that contain
the commit 839c817ce67178ca3c7c7ad534c571bba1e69ebe "xhci: Store
information about roothubs and TTs."

Reported-by: Sergey Dyasly <dserrg@gmail.com>
Tested-by: Sergey Dyasly <dserrg@gmail.com>
Signed-off-by: Vladimir Murzin <murzin.v@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org