After the Bluetooth USB controller is connected, error may occur on the first reset HCI command. [ 5.678408] Bluetooth: hci0: command 0x0c03 tx timeout [ 5.678435] Bluetooth: hci0: BCM: Reset failed (-110) [ 18.030627] usb 1-8: Failed to suspend device, error -110 To reduce this error, insert a little sleep for warmup. Signed-off-by: Tatsuya S <tatsuya.s2862@xxxxxxxxx> --- drivers/bluetooth/btbcm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c index 0a60660fc8ce..026d8571adf5 100644 --- a/drivers/bluetooth/btbcm.c +++ b/drivers/bluetooth/btbcm.c @@ -733,6 +733,9 @@ int btbcm_setup_apple(struct hci_dev *hdev) struct sk_buff *skb; int err; + /* Waiting for hardware warmup */ + msleep(200); + /* Reset */ err = btbcm_reset(hdev); if (err) -- 2.48.1
