From a7574ca74a6e9021f6a058aa21dab84e552cab22 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Fri, 18 Jun 2021 08:14:35 +0200 Subject: [PATCH] mxser: remove MOXA_ASPP_OQUEUE 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 Link: https://lore.kernel.org/r/20210618061516.662-30-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman --- drivers/tty/mxser.c | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 1eb48141d6ca4..ca417d9a03cf3 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; } -- 2.30.2