mxser: remove MOXA_HighSpeedOn ioctl

1) The semantics are defined exactly nowhere.
2) The ioctl definition was never exposed to userspace, so noone should
   actually be reliably using this.
3) It's not even mentioned in any of the mxser utilities.

Provided the above, remove this mxser-special ioctl.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210618061516.662-31-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index ca417d9..586fa35 100644 (file)
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -50,7 +50,6 @@
  */
 
 #define MOXA                   0x400
-#define MOXA_HighSpeedOn       (MOXA + 61)
 #define MOXA_SET_OP_MODE       (MOXA + 66)
 #define MOXA_GET_OP_MODE       (MOXA + 67)
 
@@ -1495,8 +1494,6 @@ static int mxser_ioctl(struct tty_struct *tty,
 
                return wait_event_interruptible(info->port.delta_msr_wait,
                                mxser_cflags_changed(info, arg, &cnow));
-       case MOXA_HighSpeedOn:
-               return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp);
        default:
                return -ENOIOCTLCMD;
        }