FAILED: patch "[PATCH] mwifiex: fix NULL pointer dereference during hidden SSID scan" failed to apply to 4.2-stable tree

The patch below does not apply to the 4.2-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From: Aniket Nagarnaik <[email protected]>
Date: Fri, 18 Sep 2015 06:32:09 -0700
Subject: [PATCH] mwifiex: fix NULL pointer dereference during hidden SSID scan

This NULL pointer dereference is observed during suspend resume stress test. All pending commands are cancelled when system goes into suspend state. There a corner case in which host may receive response for last scan command after this and try to trigger extra active scan for hidden SSIDs.

The issue is fixed by adding a NULL check to skip that extra scan.

index 3675730fc3b5..c20017ced566 100644
@@ -1893,7 +1893,7 @@ mwifiex_active_scan_req_for_passive_chan(struct mwifiex_private *priv)
 	u8 id = 0;
 	struct mwifiex_user_scan_cfg  *user_scan_cfg;
 
-	if (adapter->active_scan_triggered) {
+	if (adapter->active_scan_triggered || !priv->scan_request) {
 		adapter->active_scan_triggered = false;
 		return 0;
 	}