kernel/linux.git/net/bluetooth/hci_sync.c, branch v6.19.11

Bluetooth: hci_sync: Fix hci_le_create_conn_sync

2026-03-25T10:13:24+00:00

[ Upstream commit 2cabe7ff1001b7a197009cf50ba71701f9cbd354 ] While introducing hci_le_create_conn_sync the functionality of hci_connect_le was ported to hci_le_create_conn_sync including the disable of the scan before starting the connection. When this code was run non synchronously the immediate call that was setting the flag HCI_LE_SCAN_INTERRUPTED had an impact. Since the completion handler for the LE_SCAN_DISABLE was not immediately called. In the completion handler of the LE_SCAN_DISABLE event, this flag is checked to set the state of the hdev to DISCOVERY_STOPPED. With the synchronised approach the later setting of the HCI_LE_SCAN_INTERRUPTED flag has not the same effect. The completion handler would immediately fire in the LE_SCAN_DISABLE call, check for the flag, which is then not yet set and do nothing. To fix this issue and make the function call work as before, we move the setting of the flag HCI_LE_SCAN_INTERRUPTED before disabling the scan. Fixes: 8e8b92ee60de ("Bluetooth: hci_sync: Add hci_le_create_conn_sync") Signed-off-by: Michael Grzeschik Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Sasha Levin

Bluetooth: Fix CIS host feature condition

2026-03-12T11:09:39+00:00

commit 7cff9a40c6b0f72ccefdaf0ffe03cfac30348f51 upstream. This fixes the condition for sending the LE Set Host Feature command. The command is sent to indicate host support for Connected Isochronous Streams in this case. It has been observed that the system could not initialize BIS-only capable controllers because the controllers do not support the command. As per Core v6.2 | Vol 4, Part E, Table 3.1 the command shall be supported if CIS Central or CIS Peripheral is supported; otherwise, the command is optional. Fixes: 709788b154ca ("Bluetooth: hci_core: Fix using {cis,bis}_capable for current settings") Cc: stable@vger.kernel.org Signed-off-by: Mariusz Skamra Reviewed-by: Paul Menzel Signed-off-by: Luiz Augusto von Dentz [ iso_capable() => cis_capable() ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

Bluetooth: hci_conn: Set link_policy on incoming ACL connections

2026-03-04T12:20:30+00:00

[ Upstream commit 4bb091013ab0f2edfed3f58bebe658a798cbcc4d ] The connection link policy is only set when establishing an outgoing ACL connection causing connection idle modes not to be available on incoming connections. Move the setting of the link policy to the creation of the connection so all ACL connection will use the link policy set on the HCI device. Signed-off-by: Stefan Sørensen Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Sasha Levin

Bluetooth: hci_sync: enable PA Sync Lost event

2026-01-09T21:03:57+00:00

Enable the PA Sync Lost event mask to ensure PA sync loss is properly reported and handled. Fixes: 485e0626e587 ("Bluetooth: hci_event: Fix not handling PA Sync Lost event") Signed-off-by: Yang Li Signed-off-by: Luiz Augusto von Dentz

Bluetooth: HCI: Add support for LL Extended Feature Set

2025-12-01T21:21:16+00:00

This adds support for emulating LL Extended Feature Set introduced in 6.0 that adds the following: Commands: - HCI_LE_Read_All_Local_Supported_Features(0x2087)(Feature:47,1) - HCI_LE_Read_All_Remote_Features(0x2088)(Feature:47,2) Events: - HCI_LE_Read_All_Remote_Features_Complete(0x2b)(Mask bit:42) Signed-off-by: Luiz Augusto von Dentz

Bluetooth: HCI: Always use the identity address when initializing a connection

2025-12-01T21:00:06+00:00

This makes sure hci_conn is initialized with the identity address if a matching IRK exists which avoids the trouble of having to do it at multiple places which seems to be missing (e.g. CIS, BIS and PA). Signed-off-by: Luiz Augusto von Dentz

Bluetooth: ISO: Add support to bind to trigger PAST

2025-12-01T21:00:04+00:00

This makes it possible to bind to a different destination address after being connected (BT_CONNECTED, BT_CONNECT2) which then triggers PAST Sender proceedure to transfer the PA Sync to the destination address. Signed-off-by: Luiz Augusto von Dentz

Bluetooth: hci_core: Introduce HCI_CONN_FLAG_PAST

2025-12-01T20:58:54+00:00

This introduces a new device flag so userspace can indicate if it wants to enable PAST Receiver for a specific device. Signed-off-by: Luiz Augusto von Dentz

Bluetooth: HCI: Add initial support for PAST

2025-12-01T20:58:54+00:00

This adds PAST related commands (HCI_OP_LE_PAST, HCI_OP_LE_PAST_SET_INFO and HCI_OP_LE_PAST_PARAMS) and events (HCI_EV_LE_PAST_RECEIVED) along with handling of PAST sender and receiver features bits including new MGMG settings ( HCI_EV_LE_PAST_RECEIVED and MGMT_SETTING_PAST_RECEIVER) which userspace can use to determine if PAST is supported by the controller. Signed-off-by: Luiz Augusto von Dentz

Bluetooth: hci_conn: Fix not cleaning up PA_LINK connections

2025-11-10T21:09:00+00:00

Contrary to what was stated on d36349ea73d8 ("Bluetooth: hci_conn: Fix running bis_cleanup for hci_conn->type PA_LINK") the PA_LINK does in fact needs to run bis_cleanup in order to terminate the PA Sync, since that is bond to the listening socket which is the entity that controls the lifetime of PA Sync, so if it is closed/released the PA Sync shall be terminated, terminating the PA Sync shall not result in the BIG Sync being terminated since once the later is established it doesn't depend on the former anymore. If the use user wants to reconnect/rebind a number of BIS(s) it shall keep the socket open until it no longer needs the PA Sync, which means it retains full control of the lifetime of both PA and BIG Syncs. Fixes: d36349ea73d8 ("Bluetooth: hci_conn: Fix running bis_cleanup for hci_conn->type PA_LINK") Fixes: a7bcffc673de ("Bluetooth: Add PA_LINK to distinguish BIG sync and PA sync connections") Signed-off-by: Luiz Augusto von Dentz