From c97a747efc93f94a4ad6c707972dfbf8d774edf9 Mon Sep 17 00:00:00 2001 From: Benjamin Berg Date: Fri, 3 Dec 2021 15:59:02 +0100 Subject: [PATCH] Bluetooth: btusb: Cancel sync commands for certain URB errors Cancel sync commands when transmission of URBs fail. This is done for both failures to send a command URB and also when the interrupt URB used to retrieve a response fails. This approach is sufficient to quickly deal with certain errors such as a device being disconnected while synchronous commands are done during initialization. Signed-off-by: Benjamin Berg Signed-off-by: Luiz Augusto von Dentz --- drivers/bluetooth/btusb.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index ab169fc..d9067a8 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -933,6 +933,8 @@ static void btusb_intr_complete(struct urb *urb) if (err != -EPERM && err != -ENODEV) bt_dev_err(hdev, "urb %p failed to resubmit (%d)", urb, -err); + if (err != -EPERM) + hci_cmd_sync_cancel(hdev, -err); usb_unanchor_urb(urb); } } @@ -976,6 +978,8 @@ static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) if (err != -EPERM && err != -ENODEV) bt_dev_err(hdev, "urb %p submission failed (%d)", urb, -err); + if (err != -EPERM) + hci_cmd_sync_cancel(hdev, -err); usb_unanchor_urb(urb); } @@ -1331,10 +1335,13 @@ static void btusb_tx_complete(struct urb *urb) if (!test_bit(HCI_RUNNING, &hdev->flags)) goto done; - if (!urb->status) + if (!urb->status) { hdev->stat.byte_tx += urb->transfer_buffer_length; - else + } else { + if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT) + hci_cmd_sync_cancel(hdev, -urb->status); hdev->stat.err_tx++; + } done: spin_lock_irqsave(&data->txlock, flags); -- 2.7.4