tree f6fb168ca1b12b70fa378e4a4a9f002513ea9683
parent 1aa2db348383cf5a65b6c6265175862c8969623d
author Jeenu Viswambharan <jeenu.viswambharan@arm.com> 1533733855 +0100
committer Jeenu Viswambharan <jeenu.viswambharan@arm.com> 1536154754 +0100

Add missing barriers to Bakery Locks

With the current implementation, it's possible for a contender to
observe accesses in the Critical Section before acquiring or releasing
the lock. Insert fencing in the locking and release codes to prevent any
reorder.

Fixes ARM-software/tf-issues#609

Change-Id: I773b82aa41dd544a2d3dbacb9a4b42c9eb767bbb
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>