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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>
This commit is contained in:
Jiri Slaby 2021-06-18 08:14:36 +02:00 committed by Greg Kroah-Hartman
parent a7574ca74a
commit 47f8276918
1 changed files with 0 additions and 3 deletions
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3
drivers/tty/mxser.c
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@ -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;
}