commit 12d02b35f3669b30c7b70ac0c1d999a259b93a5a
author Abhishek Srivastava <cabsriv@codeaurora.org> Mon Mar 19 18:02:50 2018 +0530
committer Roshan Pius <rpius@google.com> Thu Mar 14 14:54:14 2019 -0700
tree 7a1f95f2e3e94cf110e36dd01d9539784b274361
parent d03677ad20ec1d521f11461160dcb56fa8b3bfff

wifi: Check whether dev node is accessible or not before opening

wifi framework tries to open dev node WIFI_DRIVER_STATE_CTRL_PARAM
as part of initialization/turn on. But this dev node may not be
present/not accessible by then.So check for the
existence/accessibility of dev node by retrying few times to
avoid possible race condition between creation and accessing
of this node.

CRs-Fixed: 2045399
Bug: 123007644
Change-Id: I7b60a19c7ca049ef681e7b2de9dff88cc6000b71

(cherry-picked from 3c0b13f44fc461e5ddcf10517bf7a9a90ceb66a9)