Simplify serial funcitons

Author: f4exb

kiss.c

@@ -147,7 +147,7 @@ void kiss_run(serial_t *serial_parms, spi_parms_t *spi_parms, arguments_t *argum
 		{
 			verbprintf(2, "Received %d bytes\n", read_count);
 			ret = write_serial(serial_parms, read_buffer, read_count);
-			verbprintf(2, "Sent %d bytes on serial\n", read_count - ret);
+			verbprintf(2, "Sent %d bytes on serial\n", ret);
 			radio_receive_listen(spi_parms, arguments); // return to Rx
 			continue; 
 		}

serial.c

@@ -157,18 +157,14 @@ void set_serial_parameters(serial_t *serial_parameters, arguments_t *arguments)
 int write_serial(serial_t *serial_parameters, char *msg, int msglen)
 // ------------------------------------------------------------------------------------------------
 {
-    int bytes_written = 0;
-    bytes_written = write(serial_parameters->SERIAL_TNC, msg, msglen);
-    return msglen - bytes_written;
+    return write(serial_parameters->SERIAL_TNC, msg, msglen);
 }
 
 // ------------------------------------------------------------------------------------------------
 // Read from serial interface
 int read_serial(serial_t *serial_parameters, char *buf, int buflen)
 // ------------------------------------------------------------------------------------------------
 {
-    int bytes_read = 0;
-    bytes_read = read(serial_parameters->SERIAL_TNC, buf, buflen);
-    return bytes_read;
+    return read(serial_parameters->SERIAL_TNC, buf, buflen);
 }