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Bluetooth: btusb: Reset port on cmd timeout

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QCA_ROME sometimes gets into a state where it is unresponsive to
commands. Since it doesn't have support for a reset gpio, reset the usb
port when this occurs instead.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Abhishek Pandit-Subedi 2020-06-24 11:11:44 -07:00 committed by Marcel Holtmann
parent 737cd06072
commit 6933568aec
1 changed files with 17 additions and 0 deletions
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17
drivers/bluetooth/btusb.c
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@ -573,6 +573,22 @@ static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
gpiod_set_value_cansleep(reset_gpio, 0);
}
static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
int err;
if (++data->cmd_timeout_cnt < 5)
return;
bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
err = usb_autopm_get_interface(data->intf);
if (!err)
usb_queue_reset_device(data->intf);
else
bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
}
static inline void btusb_free_frags(struct btusb_data *data)
{
unsigned long flags;
@ -3964,6 +3980,7 @@ static int btusb_probe(struct usb_interface *intf,
if (id->driver_info & BTUSB_QCA_ROME) {
data->setup_on_usb = btusb_setup_qca;
hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
hdev->cmd_timeout = btusb_qca_cmd_timeout;
set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
btusb_check_needs_reset_resume(intf);
}