qcacld-3.0: skip overlap check with vdev on disabled band

When AP_AP work on 5 GHz SCC channel, but then hostapd_cli disable
this band, AP_AP can't switch to channel of the other band if force
SCC is enabled.

The cause is that channel switch is one by one for each AP in
hdd_country_change_update_sap(), the first AP's new channel(within
the other band) can't pass overlap check from
sme_check_concurrent_channel_overlap() against the second AP's working
channel(5 GHz band), then cause channel switch failure.

To fix this issue, the overlap check(e.g.,for the first AP) should
skip any vdevs(e.g.,the second AP) that still work on channels on
disabled band, noting that these vdevs will also switch to the other
band later.

Change-Id: I00ee1038c56dffdc01bcf902d77d1c1365c9c64a
CRs-Fixed: 3616777

core/sme/src/csr/csr_util.c

@@ -605,6 +605,7 @@ uint16_t csr_check_concurrent_channel_overlap(struct mac_context *mac_ctx,
 	QDF_STATUS status;
 	enum QDF_OPMODE op_mode;
 	enum phy_ch_width ch_width;
+	enum channel_state state;
 
 	if (mac_ctx->roam.configParam.cc_switch_mode ==
 			QDF_MCC_TO_SCC_SWITCH_DISABLE)
@@ -672,6 +673,20 @@ uint16_t csr_check_concurrent_channel_overlap(struct mac_context *mac_ctx,
 					&intf_cfreq, op_mode,
 					cc_switch_mode);
 		}
+
+		if (intf_ch_freq) {
+			state = wlan_reg_get_channel_state_for_pwrmode(
+					mac_ctx->pdev, intf_ch_freq,
+					REG_CURRENT_PWR_MODE);
+			if (state == CHANNEL_STATE_DISABLE ||
+			    state == CHANNEL_STATE_INVALID) {
+				sme_debug("skip vdev %d for intf_ch:%d",
+					  i, intf_ch_freq);
+				intf_ch_freq = 0;
+				continue;
+			}
+		}
+
 		if (intf_ch_freq &&
 		    ((intf_ch_freq <= wlan_reg_ch_to_freq(CHAN_ENUM_2484) &&
 		     sap_ch_freq <= wlan_reg_ch_to_freq(CHAN_ENUM_2484)) ||