tree 9b49cee2a34adeea5ada23ceffb08fa5ce6c8b21
parent ab028db41ca9174caab7f9e3fc0a2e7f4a418410
author Jake Oshins <jakeo@microsoft.com> 1459876970 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1462050097 -0700

drivers:hv: Lock access to hyperv_mmio resource tree

In existing code, this tree of resources is created
in single-threaded code and never modified after it is
created, and thus needs no locking.  This patch introduces
a semaphore for tree access, as other patches in this
series introduce run-time modifications of this resource
tree which can happen on multiple threads.

Signed-off-by: Jake Oshins <jakeo@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>