400 	/* If controller is not scanning we are done. */  in hci_le_scan_restart_sync()
405 		bt_dev_dbg(hdev, "Scanning is paused for suspend");  in hci_le_scan_restart_sync()
903 	 * scanning and non-connectable advertising.  in hci_update_random_address_sync()
2002 	/* If controller is not scanning we are done. */  in hci_scan_disable_sync()
2007 		bt_dev_dbg(hdev, "Scanning is paused for suspend");  in hci_scan_disable_sync()
2013 		bt_dev_err(hdev, "Unable to disable scanning: %d", err);  in hci_scan_disable_sync()
2379 /* Device must not be scanning when updating the accept list.
2389  * Enable Scanning
2484 	 * - Interleaved scanning is not currently using the allowlist  in hci_update_accept_list_sync()
2507 /* Returns true if an le connection is in the scanning state */
2601 		bt_dev_dbg(hdev, "Scanning is paused for suspend");  in hci_start_scan_sync()
2622 		bt_dev_dbg(hdev, "Scanning is paused for suspend");  in hci_passive_scan_sync()
2628 		bt_dev_err(hdev, "disable scanning failed: %d", err);  in hci_passive_scan_sync()
2633 	 * during passive scanning. Not using an non-resolvable address  in hci_passive_scan_sync()
2649 	 * happen before enabling scanning. The controller does  in hci_passive_scan_sync()
2650 	 * not allow accept list modification while scanning.  in hci_passive_scan_sync()
2693 /* This function controls the passive scanning based on hdev->pend_le_conns
2694  * list. If there are pending LE connection we start the background scanning,
2699  * Disable Scanning -> Update Accept List ->
2702  * Enable Scanning
2706  * Disable Scanning
2720 	/* No point in doing scanning if LE support hasn't been enabled */  in hci_update_passive_scan_sync()
2728 	/* Reset RSSI and UUID filters when starting background scanning  in hci_update_passive_scan_sync()
2747 		 * background scanning.  in hci_update_passive_scan_sync()
2750 		bt_dev_dbg(hdev, "stopping background scanning");  in hci_update_passive_scan_sync()
2754 			bt_dev_err(hdev, "stop background scanning failed: %d",  in hci_update_passive_scan_sync()
2761 		/* If controller is connecting, we should not start scanning  in hci_update_passive_scan_sync()
2768 		bt_dev_dbg(hdev, "start background scanning");  in hci_update_passive_scan_sync()
2772 			bt_dev_err(hdev, "start background scanning failed: %d",  in hci_update_passive_scan_sync()
5366 	/* If controller is scanning, it means the passive scanning is  in hci_active_scan_sync()
5368 	 * discovery scanning parameters.  in hci_active_scan_sync()
5372 		bt_dev_err(hdev, "Unable to disable scanning: %d", err);  in hci_active_scan_sync()
5378 	/* Pause advertising since active scanning disables address resolution  in hci_active_scan_sync()
5389 	/* Disable address resolution while doing active scanning since the  in hci_active_scan_sync()
5412 		 * advertisement for one peer(*) during active scanning, and  in hci_active_scan_sync()
5420 		 * it is common to have active scanning for a short period of  in hci_active_scan_sync()
5437 	/* Resume passive scanning */  in hci_active_scan_sync()
5466 		/* When running simultaneous discovery, the LE scanning time  in hci_start_discovery_sync()
5468 		 * and LE scanning are scheduled by the controller.  in hci_start_discovery_sync()
5471 		 * and LE scanning are done sequentially with separate  in hci_start_discovery_sync()
5504 	 * restarting scanning during the discovery phase.  in hci_start_discovery_sync()
5555 	bool scanning = test_bit(HCI_PSCAN, &hdev->flags);  in hci_update_event_filter_sync()  local
5587 	if (scan && !scanning)  in hci_update_event_filter_sync()
5589 	else if (!scan && scanning)  in hci_update_event_filter_sync()
5614  * Pause discovery (active scanning/inquiry)
5616  * Pause Scanning (passive scanning in case discovery was not active)
5622  * Update passive scanning (lower duty cycle)
5645 	/* Prevent disconnects from causing scanning to be re-enabled */  in hci_suspend_sync()
5672 	/* Unpause to take care of updating scanning params */  in hci_suspend_sync()
5731 	/* Reset passive scanning to normal */  in hci_resume_scan_sync()
5741  * Update passive scanning (normal duty cycle)
5743  * Resume discovery (active scanning/inquiry)
5759 	/* Resume scanning */  in hci_resume_sync()
5971 		/* If we're active scanning and simultaneous roles is not  in hci_le_create_conn_sync()
6005 	/* If controller is scanning, we stop it since some controllers are  in hci_le_create_conn_sync()