mwifiex: send fewer channels to scan while connected

Application triggers periodic background scans when device is connected.
We will scan less number of channels per scan command so that data
traffic won't get affected.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/marvell/mwifiex/scan.c

@@ -994,10 +994,15 @@ mwifiex_config_scan(struct mwifiex_private *priv,
 	 *  If a specific BSSID or SSID is used, the number of channels in the
 	 *  scan command will be increased to the absolute maximum.
 	 */
-	if (*filtered_scan)
+	if (*filtered_scan) {
 		*max_chan_per_scan = MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN;
-	else
+	} else {
+		if (!priv->media_connected)
 			*max_chan_per_scan = MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD;
+		else
+			*max_chan_per_scan =
+					MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD / 2;
+	}
 
 	if (adapter->ext_scan) {
 		bss_mode = (struct mwifiex_ie_types_bss_mode *)tlv_pos;