qcacld-3.0: Check HW mode before sending join request to lower layers

When STA's join req times out on current BSS, SME issues next BSS
internally without checking HW mode for new channel.

For example, STA tries to connect SSID="abc",
BSSID="a1:a2:a3:a4:a5:a6", channel=36 and lets say it fails. It
should try few more times to same BSSID and after that it will try
next bss. Lets say next BSS it found has, SSID="abc",
BSSID="b1:b2:b3:b4:b5:b6", channel=1 then it needs to check whether
hardware mode change is required for channel=1. If driver fails in
checking hardware mode then following check will prevent the bad
situation.

CRs-Fixed: 2242562
Change-Id: Ie31ac5b8b90c6e63122148647ad333fccfbf9dbf

core/sme/src/csr/csr_api_roam.c

@@ -15281,7 +15281,7 @@ QDF_STATUS csr_send_join_req_msg(tpAniSirGlobal pMac, uint32_t sessionId,
 	int8_t pwrLimit = 0;
 	struct ps_global_info *ps_global_info = &pMac->sme.ps_global_info;
 	struct ps_params *ps_param = &ps_global_info->ps_params[sessionId];
-	uint8_t ese_config = 0;
+	uint8_t ese_config = 0, channel_id;
 	tpCsrNeighborRoamControlInfo neigh_roam_info;
 	uint32_t value = 0, value1 = 0;
 	QDF_STATUS packetdump_timer_status;
@@ -15310,6 +15310,25 @@ QDF_STATUS csr_send_join_req_msg(tpAniSirGlobal pMac, uint32_t sessionId,
 		pSession->disable_hi_rssi = false;
 	}
 
+	/*
+	 * When STA's join req times out on current BSS, SME issues next BSS
+	 * internally without checking HW mode for new channel.
+	 *
+	 * For example, STA tries to connect SSID="abc",
+	 * BSSID="a1:a2:a3:a4:a5:a6", channel=36 and lets say it fails. It
+	 * should try few more times to same BSSID and after that it will try
+	 * next bss. Lets say next BSS it found has, SSID="abc",
+	 * BSSID="b1:b2:b3:b4:b5:b6", channel=1 then it needs to check whether
+	 * hardware mode change is required for channel=1. If driver fails in
+	 * checking hardware mode then following check will prevent the bad
+	 * situation.
+	 */
+	channel_id = pBssDescription->channelId;
+	if (!policy_mgr_is_hwmode_set_for_given_chnl(pMac->psoc, channel_id)) {
+		sme_err("HW mode is not properly set for channel %d",
+			channel_id);
+		return QDF_STATUS_E_FAILURE;
+	}
 
 	do {
 		pSession->joinFailStatusCode.statusCode = eSIR_SME_SUCCESS;