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Commit 392c3148 authored by Alexander Viro's avatar Alexander Viro Committed by Linus Torvalds
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[PATCH] callout removal: 68360 

callout removal: 68360
parent ddad3686
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Showing with 10 additions and 68 deletions
drivers/serial/68360serial.c
View file @ 392c3148
......@@ -73,7 +73,7 @@ extern int kgdb_output_string (const char* s, unsigned int count);
static char *serial_name = "CPM UART driver";
static char *serial_version = "0.03";
static struct tty_driver serial_driver, callout_driver;
static struct tty_driver serial_driver;
static int serial_refcount;
int serial_console_setup(struct console *co, char *options);
......@@ -164,7 +164,6 @@ struct serial_state {
unsigned short closing_wait; /* time to wait before closing */
struct async_icount_24 icount;
struct termios normal_termios;
struct termios callout_termios;
int io_type;
struct async_struct *info;
};
......@@ -256,8 +255,6 @@ 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;
......@@ -610,8 +607,7 @@ 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
......@@ -1718,8 +1714,6 @@ static void rs_360_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.
......@@ -1768,8 +1762,7 @@ static void rs_360_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;
local_irq_restore(flags);
......@@ -1861,7 +1854,7 @@ static void rs_360_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);
}
......@@ -1899,28 +1892,6 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
#endif
}
#if 0 /* FIXME */
/*
* 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;
}
#endif
/*
* If non-blocking mode is set, or the port is not enabled,
* then make the check up front and then exit.
......@@ -1930,19 +1901,12 @@ 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 & NUM_IS_SCC)) {
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;
}
if (tty->termios->c_cflag & CLOCAL)
do_clocal = 1;
/*
* Block waiting for the carrier detect and the line to become
......@@ -1965,8 +1929,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
info->blocked_open++;
while (1) {
local_irq_disable();
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));
......@@ -1984,8 +1947,7 @@ 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;
......@@ -2076,16 +2038,10 @@ static int rs_360_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;
*tty->termios = info->state->normal_termios;
change_speed(info);
}
info->session = current->session;
info->pgrp = current->pgrp;
#ifdef SERIAL_DEBUG_OPEN
printk("rs_open %s successful...", tty->name);
#endif
......@@ -2617,22 +2573,9 @@ int rs_360_init(void)
/* serial_driver.wait_until_sent = rs_360_wait_until_sent; */
/* serial_driver.read_proc = rs_360_read_proc; */
/*
* The callout device is just like normal device except for
* major number and the subtype code.
*/
callout_driver = serial_driver;
callout_driver.name = "cua";
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");
cp = pquicc; /* Get pointer to Communication Processor */
/* immap = (immap_t *)IMAP_ADDR; */ /* and to internal registers */
......@@ -2690,7 +2633,6 @@ int rs_360_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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