qcacmn: Do not print DFS error message for non 5 GHz pdev

In Repeater AP scenario, when STA vap starts scan, it calls the
registered DFS callback function to get the AP CAC status. For a
2 GHz pdev, dfs object is NULL and hence 'dfs is NULL' print is
always seen when user enables the dfs error logs.

Add non 5 GHz pdev check in dfs callback function before dfs NULL check.

Change-Id: Id087d0b126996406f2b6e1b5b34b90a12a18a890
CRs-Fixed: 2245034

umac/dfs/dispatcher/src/wlan_dfs_init_deinit_api.c

@@ -385,6 +385,10 @@ static void dfs_scan_serialization_comp_info_cb(
 {
 	struct wlan_dfs *dfs = NULL;
 	struct wlan_objmgr_pdev *pdev;
+	struct wlan_lmac_if_dfs_tx_ops *dfs_tx_ops;
+	struct wlan_objmgr_psoc *psoc;
+	bool is_5ghz = false;
+	QDF_STATUS status;
 
 	if (!comp_info) {
 		dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS,  "comp_info is NULL");
@@ -404,6 +408,27 @@ static void dfs_scan_serialization_comp_info_cb(
 
 	comp_info->scan_info.is_cac_in_progress = false;
 
+	psoc = wlan_pdev_get_psoc(pdev);
+	if (!psoc) {
+		dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS,  "null psoc");
+		return;
+	}
+
+	dfs_tx_ops = wlan_psoc_get_dfs_txops(psoc);
+	if (!(dfs_tx_ops && dfs_tx_ops->dfs_is_pdev_5ghz)) {
+		dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS,  "dfs_tx_ops is null");
+		return;
+	}
+
+	status = dfs_tx_ops->dfs_is_pdev_5ghz(pdev, &is_5ghz);
+	if (QDF_IS_STATUS_ERROR(status)) {
+		dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS,  "Failed to get is_5ghz value");
+		return;
+	}
+
+	if (!is_5ghz)
+		return;
+
 	dfs = wlan_pdev_get_dfs_obj(pdev);
 	if (!dfs) {
 		dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS,  "dfs is NULL");