Commit 17d76c18 authored by Alexander Viro's avatar Alexander Viro Committed by Linus Torvalds

[PATCH] callout removal: 8260_uart

callout removal: 8260_uart
parent 40f99081
......@@ -74,7 +74,7 @@
static char *serial_name = "CPM UART driver";
static char *serial_version = "0.02";
static struct tty_driver serial_driver, callout_driver;
static struct tty_driver serial_driver;
static int serial_refcount;
static int serial_console_setup(struct console *co, char *options);
......@@ -200,8 +200,6 @@ typedef struct serial_info {
unsigned long event;
unsigned long last_active;
int blocked_open; /* # of blocked opens */
long session; /* Session of opening process */
long pgrp; /* pgrp of opening process */
struct work_struct tqueue;
struct work_struct tqueue_hangup;
wait_queue_head_t open_wait;
......@@ -531,8 +529,7 @@ static _INLINE_ void check_modem_status(struct async_struct *info)
#endif
if (status & UART_MSR_DCD)
wake_up_interruptible(&info->open_wait);
else if (!((info->flags & ASYNC_CALLOUT_ACTIVE) &&
(info->flags & ASYNC_CALLOUT_NOHUP))) {
else {
#ifdef SERIAL_DEBUG_OPEN
printk("scheduling hangup...");
#endif
......@@ -1667,8 +1664,6 @@ static void rs_8xx_close(struct tty_struct *tty, struct file * filp)
*/
if (info->flags & ASYNC_NORMAL_ACTIVE)
info->state->normal_termios = *tty->termios;
if (info->flags & ASYNC_CALLOUT_ACTIVE)
info->state->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.
......@@ -1716,8 +1711,7 @@ static void rs_8xx_close(struct tty_struct *tty, struct file * filp)
}
wake_up_interruptible(&info->open_wait);
}
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE|
ASYNC_CLOSING);
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
wake_up_interruptible(&info->close_wait);
MOD_DEC_USE_COUNT;
restore_flags(flags);
......@@ -1799,7 +1793,7 @@ static void rs_8xx_hangup(struct tty_struct *tty)
shutdown(info);
info->event = 0;
state->count = 0;
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
info->flags &= ~ASYNC_NORMAL_ACTIVE;
info->tty = 0;
wake_up_interruptible(&info->open_wait);
}
......@@ -1837,25 +1831,6 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
#endif
}
/*
* If this is a callout device, then just make sure the normal
* device isn't being used.
*/
if (tty->driver->subtype == SERIAL_TYPE_CALLOUT) {
if (info->flags & ASYNC_NORMAL_ACTIVE)
return -EBUSY;
if ((info->flags & ASYNC_CALLOUT_ACTIVE) &&
(info->flags & ASYNC_SESSION_LOCKOUT) &&
(info->session != current->session))
return -EBUSY;
if ((info->flags & ASYNC_CALLOUT_ACTIVE) &&
(info->flags & ASYNC_PGRP_LOCKOUT) &&
(info->pgrp != current->pgrp))
return -EBUSY;
info->flags |= ASYNC_CALLOUT_ACTIVE;
return 0;
}
/*
* If non-blocking mode is set, or the port is not enabled,
* then make the check up front and then exit.
......@@ -1865,19 +1840,12 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
if ((filp->f_flags & O_NONBLOCK) ||
(tty->flags & (1 << TTY_IO_ERROR)) ||
(info->state->smc_scc_num < SCC_NUM_BASE)) {
if (info->flags & ASYNC_CALLOUT_ACTIVE)
return -EBUSY;
info->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
if (info->flags & ASYNC_CALLOUT_ACTIVE) {
if (state->normal_termios.c_cflag & CLOCAL)
do_clocal = 1;
} else {
if (tty->termios->c_cflag & CLOCAL)
do_clocal = 1;
}
/*
* Block waiting for the carrier detect and the line to become
......@@ -1900,8 +1868,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
info->blocked_open++;
while (1) {
cli();
if (!(info->flags & ASYNC_CALLOUT_ACTIVE) &&
(tty->termios->c_cflag & CBAUD))
if (tty->termios->c_cflag & CBAUD)
serial_out(info, UART_MCR,
serial_inp(info, UART_MCR) |
(UART_MCR_DTR | UART_MCR_RTS));
......@@ -1919,8 +1886,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
#endif
break;
}
if (!(info->flags & ASYNC_CALLOUT_ACTIVE) &&
!(info->flags & ASYNC_CLOSING) &&
if (!(info->flags & ASYNC_CLOSING) &&
(do_clocal || (serial_in(info, UART_MSR) &
UART_MSR_DCD)))
break;
......@@ -2010,16 +1976,10 @@ static int rs_8xx_open(struct tty_struct *tty, struct file * filp)
if ((info->state->count == 1) &&
(info->flags & ASYNC_SPLIT_TERMIOS)) {
if (tty->driver->subtype == SERIAL_TYPE_NORMAL)
*tty->termios = info->state->normal_termios;
else
*tty->termios = info->state->callout_termios;
change_speed(info);
}
info->session = current->session;
info->pgrp = current->pgrp;
#ifdef SERIAL_DEBUG_OPEN
printk("rs_open %s successful...", line);
#endif
......@@ -2544,25 +2504,8 @@ int __init rs_8xx_init(void)
serial_driver.wait_until_sent = rs_8xx_wait_until_sent;
serial_driver.read_proc = rs_8xx_read_proc;
/*
* The callout device is just like normal device except for
* major number and the subtype code.
*/
callout_driver = serial_driver;
#ifdef CONFIG_DEVFS_FS
callout_driver.name = "cua/";
#else
callout_driver.name = "cua";
#endif
callout_driver.major = TTYAUX_MAJOR;
callout_driver.subtype = SERIAL_TYPE_CALLOUT;
callout_driver.read_proc = 0;
callout_driver.proc_entry = 0;
if (tty_register_driver(&serial_driver))
panic("Couldn't register serial driver\n");
if (tty_register_driver(&callout_driver))
panic("Couldn't register callout driver\n");
immap = immr;
cp = &immap->im_cpm;
......@@ -2644,7 +2587,6 @@ int __init rs_8xx_init(void)
state->custom_divisor = 0;
state->close_delay = 5*HZ/10;
state->closing_wait = 30*HZ;
state->callout_termios = callout_driver.init_termios;
state->normal_termios = serial_driver.init_termios;
state->icount.cts = state->icount.dsr =
state->icount.rng = state->icount.dcd = 0;
......
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