diff options
Diffstat (limited to 'drivers/usb/serial/usb_wwan.c')
| -rw-r--r-- | drivers/usb/serial/usb_wwan.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index 7e855c87e4f7..4b9845807bee 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -270,6 +270,10 @@ static void usb_wwan_indat_callback(struct urb *urb) if (status) { dev_dbg(dev, "%s: nonzero status: %d on endpoint %02x.\n", __func__, status, endpoint); + + /* don't resubmit on fatal errors */ + if (status == -ESHUTDOWN || status == -ENOENT) + return; } else { if (urb->actual_length) { tty_insert_flip_string(&port->port, data, @@ -461,6 +465,7 @@ static struct urb *usb_wwan_setup_urb(struct usb_serial_port *port, void (*callback) (struct urb *)) { struct usb_serial *serial = port->serial; + struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial); struct urb *urb; urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ @@ -471,6 +476,9 @@ static struct urb *usb_wwan_setup_urb(struct usb_serial_port *port, usb_sndbulkpipe(serial->dev, endpoint) | dir, buf, len, callback, ctx); + if (intfdata->use_zlp && dir == USB_DIR_OUT) + urb->transfer_flags |= URB_ZERO_PACKET; + return urb; } |