tree 6de0bd1cfb24f168cc958acdb3928ccaa8972902
parent ee9cdb160b47f53bae280bbcf25d0d7fd04d9f77
author Jeenu Viswambharan <jeenu.viswambharan@arm.com> 1516622653 +0000
committer Jeenu Viswambharan <jeenu.viswambharan@arm.com> 1519738907 +0000

SDEI: Pop dispatch context only after error checking

Currently, when the client attempts to do SDEI_EVENT_COMPLETE or
SDEI_EVENT_COMPLETE_AND_RESUME, the dispatcher pops off the outstanding
dispatch context for sanity check. There are however other checks
following this, which could potentially return failure. If that happens,
by popping the context, the dispatcher has inadvertently discarded a
valid context.

This patch fixes this bug by inspecting (not actually popping) the
outstanding context. The context is popped only after all error checks
are completed.

Change-Id: Ie199f6442f871a8177a8247a0c646543bad76d21
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>