tree 8c96c9019a5a58272ff7e38d26e6457fca699541
parent 47c737dba8435e20febe3de129c63dcb4b902eec
author Shashikala Prabhu <pshashik@codeaurora.org> 1557482589 +0530
committer nshrivas <nshrivas@codeaurora.org> 1557831121 -0700

qcacmn: Fix deadlock due to peer_ref_mutex and scn_lock

Deadlock happens when control path takes scn_lock and calls
dp_peer_unref_delete() which in tern tries to acquire peer_ref_mutex.
At the same time, if other core starts handling peer_unmap by acquiring
peer_ref_mutex and calls dp_reset_and_release_peer_mem() which in turn
calls ol_ath_node_free() and tries to acquire scn_lock leading to a
deadlock.

Fix this by unlocking peer_ref_mutex before calling
dp_reset_and_release_peer_mem().

Change-Id: I343a8ef8f0914f9245a06b2818c9cbbe1db5218f
CRs-Fixed: 2449878