diff mbox series

[29/70] mxser: remove MOXA_ASPP_OQUEUE ioctl

Message ID 20210618061516.662-30-jslaby@suse.cz
State New
Headers show
Series mxser: cleanup | expand

Commit Message

Jiri Slaby June 18, 2021, 6:14 a.m. UTC 
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>
---
 drivers/tty/mxser.c | 13 -------------
 1 file changed, 13 deletions(-)
diff mbox series

Patch

diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 1eb48141d6ca..ca417d9a03cf 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -60,8 +60,6 @@ 
 #define RS485_4WIRE_MODE	3
 #define OP_MODE_MASK		3
 
-#define MOXA_ASPP_OQUEUE	(MOXA + 70)
-
 /* --------------------------------------------------- */
 
 /*
@@ -1499,17 +1497,6 @@  static int mxser_ioctl(struct tty_struct *tty,
 				mxser_cflags_changed(info, arg, &cnow));
 	case MOXA_HighSpeedOn:
 		return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp);
-	case MOXA_ASPP_OQUEUE:{
-		int len, lsr;
-
-		len = mxser_chars_in_buffer(tty);
-		spin_lock_irq(&info->slock);
-		lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_THRE;
-		spin_unlock_irq(&info->slock);
-		len += (lsr ? 0 : 1);
-
-		return put_user(len, (int __user *)argp);
-	}
 	default:
 		return -ENOIOCTLCMD;
 	}