From: Aditya Garg gargaditya08@live.com
Some devices have a bug causing them to not work if they query LE tx power on startup. Thus we add a quirk in order to not query it and default min/max tx power values to HCI_TX_POWER_INVALID.
Signed-off-by: Aditya Garg gargaditya08@live.com Reported-by: Orlando Chamberlain redecorating@protonmail.com Tested-by: Orlando Chamberlain redecorating@protonmail.com Link: https://lore.kernel.org/r/4970a940-211b-25d6-edab-21a815313954@protonmail.co... Fixes: 7c395ea521e6 ("Bluetooth: Query LE tx power on startup") --- v7 :- Added Tested-by. v8 :- Fix checkpatch error. include/net/bluetooth/hci.h | 9 +++++++++ net/bluetooth/hci_core.c | 3 ++- 2 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index 63065bc01b766c..383342efcdc464 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -246,6 +246,15 @@ enum { * HCI after resume. */ HCI_QUIRK_NO_SUSPEND_NOTIFIER, + + /* + * When this quirk is set, LE tx power is not queried on startup + * and the min/max tx power values default to HCI_TX_POWER_INVALID. + * + * This quirk can be set before hci_register_dev is called or + * during the hdev->setup vendor callback. + */ + HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, };
/* HCI device flags */ diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 8d33aa64846b1c..434c6878fe9640 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -619,7 +619,8 @@ static int hci_init3_req(struct hci_request *req, unsigned long opt) hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); }
- if (hdev->commands[38] & 0x80) { + if ((hdev->commands[38] & 0x80) && + !test_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks)) { /* Read LE Min/Max Tx Power*/ hci_req_add(req, HCI_OP_LE_READ_TRANSMIT_POWER, 0, NULL);