qcacld-3.0: Add support for recovery in FTM mode

While the driver is in FTM state, if a PDR is encountered
the driver is not allowed to recover.

Allow the recovery of the driver after PDR in FTM mode.

Change-Id: Ib4ee3970067a9fde5ba12d4dd954774a16ef0255
CRs-Fixed: 2181509

core/hdd/inc/wlan_hdd_main.h

@@ -1889,6 +1889,20 @@ enum QDF_GLOBAL_MODE hdd_get_conparam(void);
 void crda_regulatory_entry_default(uint8_t *countryCode, int domain_id);
 void wlan_hdd_reset_prob_rspies(struct hdd_adapter *adapter);
 void hdd_prevent_suspend(uint32_t reason);
+
+/*
+ * hdd_get_first_valid_adapter() - Get the first valid adapter from adapter list
+ *
+ * This function is used to fetch the first valid adapter from the adapter
+ * list. If there is no valid adapter then it returns NULL
+ *
+ * @hdd_ctx: HDD context handler
+ *
+ * Return: NULL if no valid adapter found in the adapter list
+ *
+ */
+struct hdd_adapter *hdd_get_first_valid_adapter(struct hdd_context *hdd_ctx);
+
 void hdd_allow_suspend(uint32_t reason);
 void hdd_prevent_suspend_timeout(uint32_t timeout, uint32_t reason);
 

core/hdd/src/wlan_hdd_driver_ops.c

@@ -531,12 +531,6 @@ static void wlan_hdd_shutdown(void)
 {
 	void *hif_ctx = cds_get_context(QDF_MODULE_ID_HIF);
 
-	if (hdd_get_conparam() == QDF_GLOBAL_FTM_MODE) {
-		hdd_err("Crash recovery is not allowed in FTM mode");
-		QDF_BUG(0);
-		return;
-	}
-
 	if (!hif_ctx) {
 		hdd_err("Failed to get HIF context, ignore SSR shutdown");
 		return;

core/hdd/src/wlan_hdd_main.c

@@ -6670,6 +6670,18 @@ QDF_STATUS hdd_post_cds_enable_config(struct hdd_context *hdd_ctx)
 	return QDF_STATUS_SUCCESS;
 }
 
+struct hdd_adapter *hdd_get_first_valid_adapter(struct hdd_context *hdd_ctx)
+{
+	struct hdd_adapter *adapter;
+
+	hdd_for_each_adapter(hdd_ctx, adapter) {
+		if (adapter && adapter->magic == WLAN_HDD_ADAPTER_MAGIC)
+			return adapter;
+	}
+
+	return NULL;
+}
+
 /* wake lock APIs for HDD */
 void hdd_prevent_suspend(uint32_t reason)
 {

core/hdd/src/wlan_hdd_power.c

@@ -1365,23 +1365,9 @@ QDF_STATUS hdd_wlan_re_init(void)
 	}
 	bug_on_reinit_failure = hdd_ctx->config->bug_on_reinit_failure;
 
-	/* The driver should always be initialized in STA mode after SSR */
-	hdd_set_conparam(0);
-	/* Try to get an adapter from mode ID */
-	adapter = hdd_get_adapter(hdd_ctx, QDF_STA_MODE);
-	if (!adapter) {
-		adapter = hdd_get_adapter(hdd_ctx, QDF_SAP_MODE);
-		if (!adapter) {
-			adapter = hdd_get_adapter(hdd_ctx, QDF_IBSS_MODE);
-			if (!adapter) {
-				adapter = hdd_get_adapter(hdd_ctx,
-							  QDF_MONITOR_MODE);
-			if (!adapter)
-				hdd_err("Failed to get Adapter!");
-			}
-
-		}
-	}
+	adapter = hdd_get_first_valid_adapter(hdd_ctx);
+	if (!adapter)
+		hdd_err("Failed to get adapter");
 
 	if (hdd_ctx->config->enable_dp_trace)
 		hdd_dp_trace_init(hdd_ctx->config);
@@ -1418,21 +1404,12 @@ QDF_STATUS hdd_wlan_re_init(void)
 	sme_set_chip_pwr_save_fail_cb(hdd_ctx->hHal,
 				      hdd_chip_pwr_save_fail_detected_cb);
 
-	ret = hdd_register_cb(hdd_ctx);
-	if (ret) {
-		hdd_err("Failed to register HDD callbacks!");
-		goto err_cds_disable;
-	}
-
 	hdd_lpass_notify_start(hdd_ctx);
 
 	hdd_send_default_scan_ies(hdd_ctx);
 	hdd_info("WLAN host driver reinitiation completed!");
 	goto success;
 
-err_cds_disable:
-	hdd_wlan_stop_modules(hdd_ctx, false);
-
 err_re_init:
 	/* Allow the phone to go to sleep */
 	hdd_allow_suspend(WIFI_POWER_EVENT_WAKELOCK_DRIVER_REINIT);