qcacld-3.0: Avoid calling idle shutdown many times

Shutdown in suspend phase, idle shutdown timer will be invoked if all
adapters closed. And then driver suspend function will return EAGAIN to
user space to try suspend again. Idle shutdown will be finished in ~1s.
Thus, Idle shutdown timer may be called for many times when user space
try suspend again.

So, add flag to avoid calling idle shutdown many times.

Change-Id: Ic701dce917288db09511f6ffc540cf8cf3eca5db
CRs-Fixed: 3140750

core/hdd/src/wlan_hdd_main.c

@@ -18313,6 +18313,7 @@ void hdd_shutdown_wlan_in_suspend(struct hdd_context *hdd_ctx)
 #define SHUTDOWN_IN_SUSPEND_PREVENT_TIMEOUT 5
 
 	if (!hdd_is_any_interface_open(hdd_ctx)) {
+		hdd_ctx->shutdown_in_suspend = true;
 		qdf_delayed_work_start(&hdd_ctx->psoc_idle_timeout_work,
 				       SHUTDOWN_IN_SUSPEND_WAIT_TIMEOUT);
 		hdd_prevent_suspend_timeout(SHUTDOWN_IN_SUSPEND_PREVENT_TIMEOUT,

core/hdd/src/wlan_hdd_power.c

@@ -2500,8 +2500,10 @@ static int __wlan_hdd_cfg80211_suspend_wlan(struct wiphy *wiphy,
 	}
 
 	if (suspend_mode == PMO_SUSPEND_SHUTDOWN) {
+		if (hdd_ctx->shutdown_in_suspend)
+			return -EAGAIN;
+
 		hdd_info_rl("Shutdown WLAN in Suspend");
-		hdd_ctx->shutdown_in_suspend = true;
 		hdd_shutdown_wlan_in_suspend(hdd_ctx);
 		/* shutdown must be excute in active, so return -EAGAIN
 		 * to PM to exit and try again