tree 2a93aba8a04c07448f50b8c06efa89c4b4bbe4f5
parent 3ea157570e186c7e3fa439591e94ed6df33672c6
author Jinwei Chen <jinweic@codeaurora.org> 1577967817 +0800
committer nshrivas <nshrivas@codeaurora.org> 1578204741 -0800

qcacmn: fix dp_tx_desc invalid accessing due to race condition

crash scenario:
  a. dp_tx_vdev_detach will reset the vdev of TX desc to NULL
by dp_tx_desc_flush.
  b. in the meantime, if TX completion is coming and when all TX desc
is recycled, the pool will be freed if pool status is invalid before.
  c. invalid TX desc accessing will happen in (a).

add TX desc pool lock protection in dp_tx_desc_flush.

Change-Id: I65c570aa6a3044a478dbe51bbf396cf24612f675
CRs-Fixed: 2595755