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authorSven Peter2022-11-04 22:13:02 +0100
committerGreg Kroah-Hartman2022-12-31 13:33:05 +0100
commit077bff242c13c372d2bd5c44c521d6852df6caf9 (patch)
tree64aa718f22b1457e0eeca8713ab0d265ffa8191c
parent9c89dcd53c64e950fe1b4ace204a6a7f68c0528e (diff)
Bluetooth: Add quirk to disable MWS Transport Configuration
[ Upstream commit ffcb0a445ec2d5753751437706aa0a7ea8351099 ] Broadcom 4378/4387 controllers found in Apple Silicon Macs claim to support getting MWS Transport Layer Configuration, < HCI Command: Read Local Supported... (0x04|0x0002) plen 0 > HCI Event: Command Complete (0x0e) plen 68 Read Local Supported Commands (0x04|0x0002) ncmd 1 Status: Success (0x00) [...] Get MWS Transport Layer Configuration (Octet 30 - Bit 3)] [...] , but then don't actually allow the required command: > HCI Event: Command Complete (0x0e) plen 15 Get MWS Transport Layer Configuration (0x05|0x000c) ncmd 1 Status: Command Disallowed (0x0c) Number of transports: 0 Baud rate list: 0 entries 00 00 00 00 00 00 00 00 00 00 Signed-off-by: Sven Peter <sven@svenpeter.dev> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
-rw-r--r--include/net/bluetooth/hci.h10
-rw-r--r--include/net/bluetooth/hci_core.h3
-rw-r--r--net/bluetooth/hci_sync.c2
3 files changed, 14 insertions, 1 deletions
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index d8abeac2fc1e..7a381fcef939 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -284,6 +284,16 @@ enum {
* during the hdev->setup vendor callback.
*/
HCI_QUIRK_BROKEN_EXT_SCAN,
+
+ /*
+ * When this quirk is set, the HCI_OP_GET_MWS_TRANSPORT_CONFIG command is
+ * disabled. This is required for some Broadcom controllers which
+ * erroneously claim to support MWS Transport Layer Configuration.
+ *
+ * This quirk can be set before hci_register_dev is called or
+ * during the hdev->setup vendor callback.
+ */
+ HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG,
};
/* HCI device flags */
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 3cd00be0fcd2..7f585e5dd71b 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1719,6 +1719,9 @@ void hci_conn_del_sysfs(struct hci_conn *conn);
((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
#define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
+#define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
+ (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
+
/* ----- HCI protocols ----- */
#define HCI_PROTO_DEFER 0x01
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 1fc693122a47..3a68d9bc43b8 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -4261,7 +4261,7 @@ static int hci_read_local_pairing_opts_sync(struct hci_dev *hdev)
/* Get MWS transport configuration if the HCI command is supported */
static int hci_get_mws_transport_config_sync(struct hci_dev *hdev)
{
- if (!(hdev->commands[30] & 0x08))
+ if (!mws_transport_config_capable(hdev))
return 0;
return __hci_cmd_sync_status(hdev, HCI_OP_GET_MWS_TRANSPORT_CONFIG,