tree e2e0344f3c1d38970fd92bc05ddea4bb5bda2ed3
parent ae5a6cf970485e9c7c49abe4057018a26b00123d
author Yue Ma <yuem@qca.qualcomm.com> 1394067980 -0800
committer Kiet Lam <c_kietl@qca.qualcomm.com> 1394305131 -0800

wlan: Prevent several functions to continue during SSR

Although wlan_hdd_cfg80211_connect_start() is called inside wlan_hdd
_cfg80211_connect() which is SSR protected, there is a chance that SSR
comes right after passing the check, so it should also be protected,
otherwise it may lead to a crash. The same protection is also made for
hdd_handle_batch_scan_ioctl() since it maybe invoked from IOCTL during
SSR.

Also add the NULL pointer check for potential crashes.

Change-Id: I25743da2e80b0362b3f55f7aaf4cbcfbd3bc8b35
CRs-fixed: 626282
(cherry picked from commit 4ed1478468df3b8a21749a4761872dbf2d197c57)