diff options
Diffstat (limited to 'drivers/usb/serial/cypress_m8.c')
| -rw-r--r-- | drivers/usb/serial/cypress_m8.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index b1b846752c4..ce0aea593f2 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -464,6 +464,11 @@ static int generic_startup(struct usb_serial *serial) dbg("%s - port %d", __func__, port->number); + if (!port->interrupt_out_urb || !port->interrupt_in_urb) { + dev_err(&port->dev, "required endpoint is missing\n"); + return -ENODEV; + } + priv = kzalloc(sizeof(struct cypress_private), GFP_KERNEL); if (!priv) return -ENOMEM; @@ -633,12 +638,6 @@ static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port) cypress_set_termios(tty, port, &priv->tmp_termios); /* setup the port and start reading from the device */ - if (!port->interrupt_in_urb) { - dev_err(&port->dev, "%s - interrupt_in_urb is empty!\n", - __func__); - return -1; - } - usb_fill_int_urb(port->interrupt_in_urb, serial->dev, usb_rcvintpipe(serial->dev, port->interrupt_in_endpointAddress), port->interrupt_in_urb->transfer_buffer, |