static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial = port->serial; int result; dbg("%s - port %d", __func__, port->number); if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) { dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); return -EPROTO; } /* Start reading from the device */ usb_fill_bulk_urb(port->read_urb, serial->dev, usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, serial->type->read_bulk_callback, port); result = usb_submit_urb(port->read_urb, GFP_KERNEL); if (result) { dev_err(&port->dev, "%s - failed resubmitting read urb, " "error %d\n", __func__, result); return result; } /* Configure the termios structure */ cp210x_get_termios(tty, port); return 0; }
static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) { dbg("%s - port %d", __func__, port->number); if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) { dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); return -EPROTO; } /* Configure the termios structure */ cp210x_get_termios(tty, port); /* The baud rate must be initialised on cp2104 */ if (tty) cp210x_change_speed(tty, port, NULL); return usb_serial_generic_open(tty, port); }
static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) { int result; dbg("%s - port %d", __func__, port->number); if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) { dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); return -EPROTO; } result = usb_serial_generic_open(tty, port); if (result) return result; /* Configure the termios structure */ cp210x_get_termios(tty, port); return 0; }