tree 988be42937a7ec640becb452c0efa768d5d34ce3
parent 3077301bb267f26660150c0f847f3e02bbbe21a5
author Vivek <vchettri@codeaurora.org> 1573812965 +0530
committer nshrivas <nshrivas@codeaurora.org> 1574197508 -0800

qcacmn: Update blocking command flags atomically

When moving a blocking command from pending to active queue,
we release the lock and call the activation cb.
After the activation cb returns, we update the blocking cmd
waiting flag based on the active cmd node's "is_blocking" param.

If the activation cb is also resulting in removing the command,
then after the cb returns, the active cmd node is returned to the
free pool and our check fails, and we miss to update the blocking
cmd waiting flag, resulting in no further commands moving to the
active queue.

The update to the blocking command should be done atomically,
immediately after it moves to active queue and before releasing
the lock for the activation callback.

Change-Id: Idedccb16ce68bb2166fb3970cd231fe738ec6af2
CRs-Fixed: 2554767