438 /* This function controls the background scanning based on hdev->pend_le_conns
439  * list. If there are pending LE connection we start the background scanning,
456 	/* No point in doing scanning if LE support hasn't been enabled */  in __hci_update_background_scan()
464 	/* Reset RSSI and UUID filters when starting background scanning  in __hci_update_background_scan()
481 		 * background scanning.  in __hci_update_background_scan()
484 		/* If controller is not scanning we are done. */  in __hci_update_background_scan()
490 		bt_dev_dbg(hdev, "stopping background scanning");  in __hci_update_background_scan()
496 		/* If controller is connecting, we should not start scanning  in __hci_update_background_scan()
503 		/* If controller is currently scanning, we stop it to ensure we  in __hci_update_background_scan()
510 		bt_dev_dbg(hdev, "starting background scanning");  in __hci_update_background_scan()
716 		bt_dev_dbg(hdev, "Scanning is paused for suspend");  in hci_req_add_le_scan_disable()
917 	 * - Interleaved scanning is not currently using the allowlist  in update_accept_list()
940 		bt_dev_dbg(hdev, "Scanning is paused for suspend");  in hci_req_start_scan()
952 	/* Use ext scanning if set ext scan param and ext scan enable is  in hci_req_start_scan()
1025 /* Returns true if an le connection is in the scanning state */
1058 	/* Background scanning should run with address resolution */  in hci_req_add_le_passive_scan()
1062 		bt_dev_dbg(hdev, "Scanning is paused for suspend");  in hci_req_add_le_passive_scan()
1067 	 * during passive scanning. Not using an non-resolvable address  in hci_req_add_le_passive_scan()
1082 	 * happen before enabling scanning. The controller does  in hci_req_add_le_passive_scan()
1083 	 * not allow accept list modification while scanning.  in hci_req_add_le_passive_scan()
1112 		/* Disable duplicates filter when scanning for advertisement  in hci_req_add_le_passive_scan()
1120 		 * scanning, it is necessary to disable duplicates filter,  in hci_req_add_le_passive_scan()
1176 	bool scanning = test_bit(HCI_PSCAN, &hdev->flags);  in hci_req_set_event_filter()  local
1200 	if (scan && !scanning) {  in hci_req_set_event_filter()
1203 	} else if (!scan && scanning) {  in hci_req_set_event_filter()
1367 		/* Prevent disconnects from causing scanning to be re-enabled */  in hci_req_prepare_suspend()
1387 		/* Unpause to take care of updating scanning params */  in hci_req_prepare_suspend()
1404 		/* Reset passive/background scanning to normal */  in hci_req_prepare_suspend()
2568 	 * scanning and non-connectable advertising.  in hci_update_random_address()
3062 	/* If controller is not scanning we are done. */  in le_scan_restart()
3067 		bt_dev_dbg(hdev, "Scanning is paused for suspend");  in le_scan_restart()
3159 	/* If controller is scanning, it means the background scanning is  in active_scan()
3161 	 * discovery scanning parameters.  in active_scan()
3180 		 * advertisement for one peer(*) during active scanning, and  in active_scan()
3188 		 * it is common to have active scanning for a short period of  in active_scan()
3227 		/* When running simultaneous discovery, the LE scanning time  in start_discovery()
3229 		 * and LE scanning are scheduled by the controller.  in start_discovery()
3232 		 * and LE scanning are done sequentially with separate  in start_discovery()
3270 	 * restarting scanning during the discovery phase.  in start_discovery()
3304 		/* Passive scanning */  in hci_req_stop_discovery()