Commit a00470d6 authored by Alexander Viro's avatar Alexander Viro Committed by Linus Torvalds

[PATCH] callout removal: generic_serial

callout removal: generic_serial
parent 05922507
......@@ -554,7 +554,7 @@ void gs_hangup(struct tty_struct *tty)
return;
gs_shutdown_port (port);
port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE |GS_ACTIVE);
port->flags &= ~(ASYNC_NORMAL_ACTIVE|GS_ACTIVE);
port->tty = NULL;
port->count = 0;
......@@ -618,48 +618,20 @@ int gs_block_til_ready(void *port_, struct file * filp)
gs_dprintk (GS_DEBUG_BTR, "after hung up\n");
/*
* If this is a callout device, then just make sure the normal
* device isn't being used.
*/
if (tty->driver->subtype == GS_TYPE_CALLOUT) {
if (port->flags & ASYNC_NORMAL_ACTIVE)
return -EBUSY;
if ((port->flags & ASYNC_CALLOUT_ACTIVE) &&
(port->flags & ASYNC_SESSION_LOCKOUT) &&
(port->session != current->session))
return -EBUSY;
if ((port->flags & ASYNC_CALLOUT_ACTIVE) &&
(port->flags & ASYNC_PGRP_LOCKOUT) &&
(port->pgrp != current->pgrp))
return -EBUSY;
port->flags |= ASYNC_CALLOUT_ACTIVE;
return 0;
}
gs_dprintk (GS_DEBUG_BTR, "after subtype\n");
/*
* If non-blocking mode is set, or the port is not enabled,
* then make the check up front and then exit.
*/
if ((filp->f_flags & O_NONBLOCK) ||
(tty->flags & (1 << TTY_IO_ERROR))) {
if (port->flags & ASYNC_CALLOUT_ACTIVE)
return -EBUSY;
port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
gs_dprintk (GS_DEBUG_BTR, "after nonblock\n");
if (port->flags & ASYNC_CALLOUT_ACTIVE) {
if (port->normal_termios.c_cflag & CLOCAL)
do_clocal = 1;
} else {
if (C_CLOCAL(tty))
do_clocal = 1;
}
/*
* Block waiting for the carrier detect and the line to become
......@@ -690,8 +662,7 @@ int gs_block_til_ready(void *port_, struct file * filp)
retval = -ERESTARTSYS;
break;
}
if (!(port->flags & ASYNC_CALLOUT_ACTIVE) &&
!(port->flags & ASYNC_CLOSING) &&
if (!(port->flags & ASYNC_CLOSING) &&
(do_clocal || CD))
break;
gs_dprintk (GS_DEBUG_BTR, "signal_pending is now: %d (%lx)\n",
......@@ -769,8 +740,6 @@ void gs_close(struct tty_struct * tty, struct file * filp)
*/
if (port->flags & ASYNC_NORMAL_ACTIVE)
port->normal_termios = *tty->termios;
if (port->flags & ASYNC_CALLOUT_ACTIVE)
port->callout_termios = *tty->termios;
/*
* Now we wait for the transmit buffer to clear; and we notify
* the line discipline to only process XON/XOFF characters.
......@@ -812,8 +781,7 @@ void gs_close(struct tty_struct * tty, struct file * filp)
}
wake_up_interruptible(&port->open_wait);
}
port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE|
ASYNC_CLOSING | ASYNC_INITIALIZED);
port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING | ASYNC_INITIALIZED);
wake_up_interruptible(&port->close_wait);
restore_flags(flags);
......
......@@ -37,11 +37,8 @@ struct gs_port {
/* struct semaphore port_write_sem; */
int flags;
struct termios normal_termios;
struct termios callout_termios;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
long session;
long pgrp;
int count;
int blocked_open;
struct tty_struct *tty;
......@@ -67,8 +64,6 @@ struct gs_port {
#define GS_TYPE_NORMAL 1
#define GS_TYPE_CALLOUT 2
#define GS_DEBUG_FLUSH 0x00000001
#define GS_DEBUG_BTR 0x00000002
......
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