CRIS: ioctl for getting RS485 information
Add ioctl to CRIS serial driver to get RS485 data from user-space.
Signed-off-by: Claudio Scordino <claudio@evidence.eu.com>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
diff --git a/drivers/serial/crisv10.c b/drivers/serial/crisv10.c
index 31f1723..3062644 100644
--- a/drivers/serial/crisv10.c
+++ b/drivers/serial/crisv10.c
@@ -3724,6 +3724,17 @@
return e100_enable_rs485(tty, &rs485data);
}
+ case TIOCGRS485:
+ {
+ struct serial_rs485 *rs485data =
+ &(((struct e100_serial *)tty->driver_data)->rs485);
+ /* This is the ioctl to get RS485 data from user-space */
+ if (copy_to_user((struct serial_rs485 *) arg,
+ rs485data,
+ sizeof(serial_rs485)))
+ return -EFAULT;
+ break;
+ }
case TIOCSERWRRS485:
{
