94 	int r;  in ch341_control_out()  local
99 	r = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,  in ch341_control_out()
103 	return r;  in ch341_control_out()
110 	int r;  in ch341_control_in()  local
116 	r = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,  in ch341_control_in()
119 	return r;  in ch341_control_in()
126 	int r;  in ch341_set_baudrate()  local
147 	r = ch341_control_out(dev, 0x9a, 0x1312, a);  in ch341_set_baudrate()
148 	if (!r)  in ch341_set_baudrate()
149 		r = ch341_control_out(dev, 0x9a, 0x0f2c, b);  in ch341_set_baudrate()
151 	return r;  in ch341_set_baudrate()
162 	int r;  in ch341_get_status()  local
170 	r = ch341_control_in(dev, 0x95, 0x0706, 0, buffer, size);  in ch341_get_status()
171 	if (r < 0)  in ch341_get_status()
175 	if (r == 2) {  in ch341_get_status()
176 		r = 0;  in ch341_get_status()
181 		r = -EPROTO;  in ch341_get_status()
184 	return r;  in ch341_get_status()
192 	int r;  in ch341_configure()  local
200 	r = ch341_control_in(dev, 0x5f, 0, 0, buffer, size);  in ch341_configure()
201 	if (r < 0)  in ch341_configure()
204 	r = ch341_control_out(dev, 0xa1, 0, 0);  in ch341_configure()
205 	if (r < 0)  in ch341_configure()
208 	r = ch341_set_baudrate(dev, priv);  in ch341_configure()
209 	if (r < 0)  in ch341_configure()
213 	r = ch341_control_in(dev, 0x95, 0x2518, 0, buffer, size);  in ch341_configure()
214 	if (r < 0)  in ch341_configure()
217 	r = ch341_control_out(dev, 0x9a, 0x2518, 0x0050);  in ch341_configure()
218 	if (r < 0)  in ch341_configure()
222 	r = ch341_get_status(dev, priv);  in ch341_configure()
223 	if (r < 0)  in ch341_configure()
226 	r = ch341_control_out(dev, 0xa1, 0x501f, 0xd90a);  in ch341_configure()
227 	if (r < 0)  in ch341_configure()
230 	r = ch341_set_baudrate(dev, priv);  in ch341_configure()
231 	if (r < 0)  in ch341_configure()
234 	r = ch341_set_handshake(dev, priv->line_control);  in ch341_configure()
235 	if (r < 0)  in ch341_configure()
239 	r = ch341_get_status(dev, priv);  in ch341_configure()
242 	return r;  in ch341_configure()
248 	int r;  in ch341_port_probe()  local
258 	r = ch341_configure(port->serial->dev, priv);  in ch341_port_probe()
259 	if (r < 0)  in ch341_port_probe()
266 	return r;  in ch341_port_probe()
314 	int r;  in ch341_open()  local
316 	r = ch341_configure(serial->dev, priv);  in ch341_open()
317 	if (r)  in ch341_open()
324 	r = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);  in ch341_open()
325 	if (r) {  in ch341_open()
327 			__func__, r);  in ch341_open()
331 	r = usb_serial_generic_open(tty, port);  in ch341_open()
333 out:	return r;  in ch341_open()
375 	int r;  in ch341_break_ctl()  local
383 	r = ch341_control_in(port->serial->dev, CH341_REQ_READ_REG,  in ch341_break_ctl()
385 	if (r < 0) {  in ch341_break_ctl()
387 				__func__, r);  in ch341_break_ctl()
404 	r = ch341_control_out(port->serial->dev, CH341_REQ_WRITE_REG,  in ch341_break_ctl()
406 	if (r < 0)  in ch341_break_ctl()
408 				__func__, r);  in ch341_break_ctl()