From: Pedro Nishiyama nishiyama.pedro@gmail.com
[ Upstream commit ff26b2dd6568392f60fa67a4e58279938025c3af ]
Some fake controllers cannot be initialized because they return a smaller report than expected for READ_VOICE_SETTING.
Signed-off-by: Pedro Nishiyama nishiyama.pedro@gmail.com Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- include/net/bluetooth/hci.h | 8 ++++++++ include/net/bluetooth/hci_core.h | 4 ++++ net/bluetooth/hci_sync.c | 3 +++ 3 files changed, 15 insertions(+)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index 5bb4eaa52e14c..dc8a3e4002e87 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -353,6 +353,14 @@ enum { * during the hdev->setup vendor callback. */ HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_PHY, + + /* When this quirk is set, the HCI_OP_READ_VOICE_SETTING command is + * skipped. This is required for a subset of the CSR controller clones + * which erroneously claim to support it. + * + * This quirk must be set before hci_register_dev is called. + */ + HCI_QUIRK_BROKEN_READ_VOICE_SETTING, };
/* HCI device flags */ diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index c95f7e6ba2551..4245910ffc4a2 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1921,6 +1921,10 @@ void hci_conn_del_sysfs(struct hci_conn *conn); ((dev)->commands[20] & 0x10 && \ !test_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks))
+#define read_voice_setting_capable(dev) \ + ((dev)->commands[9] & 0x04 && \ + !test_bit(HCI_QUIRK_BROKEN_READ_VOICE_SETTING, &(dev)->quirks)) + /* Use enhanced synchronous connection if command is supported and its quirk * has not been set. */ diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index 7b2b04d6b8563..bb455e96a715a 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -3720,6 +3720,9 @@ static int hci_read_local_name_sync(struct hci_dev *hdev) /* Read Voice Setting */ static int hci_read_voice_setting_sync(struct hci_dev *hdev) { + if (!read_voice_setting_capable(hdev)) + return 0; + return __hci_cmd_sync_status(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL, HCI_CMD_TIMEOUT); }