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Commit 916b7656 authored by Jiri Slaby's avatar Jiri Slaby Committed by Greg Kroah-Hartman
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TTY: serialP, merge serial_state and async_struct 

This is the final step to get rid of the one of the structures.  A
further cleanup will follow. And I struct serial_state deserves cease
to exist after a switch to tty_port too.

While changing the lines, it removes also pointless tty->driver_data
casts.
Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 13c90621
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Showing with 191 additions and 284 deletions
arch/ia64/hp/sim/simserial.c
View file @ 916b7656
......@@ -163,7 +163,7 @@ static void receive_chars(struct tty_struct *tty)
*/
static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
{
struct async_struct *info = dev_id;
struct serial_state *info = dev_id;
if (!info->tty) {
printk(KERN_INFO "simrs_interrupt_single: info|tty=0 info=%p problem\n", info);
......@@ -185,7 +185,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
static int rs_put_char(struct tty_struct *tty, unsigned char ch)
{
struct async_struct *info = (struct async_struct *)tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long flags;
if (!tty || !info->xmit.buf)
......@@ -202,12 +202,11 @@ static int rs_put_char(struct tty_struct *tty, unsigned char ch)
return 1;
}
static void transmit_chars(struct async_struct *info, int *intr_done)
static void transmit_chars(struct serial_state *info, int *intr_done)
{
int count;
unsigned long flags;
local_irq_save(flags);
if (info->x_char) {
......@@ -215,7 +214,7 @@ static void transmit_chars(struct async_struct *info, int *intr_done)
console->write(console, &c, 1);
info->state->icount.tx++;
info->icount.tx++;
info->x_char = 0;
goto out;
......@@ -256,7 +255,7 @@ static void transmit_chars(struct async_struct *info, int *intr_done)
static void rs_flush_chars(struct tty_struct *tty)
{
struct async_struct *info = (struct async_struct *)tty->driver_data;
struct serial_state *info = tty->driver_data;
if (info->xmit.head == info->xmit.tail || tty->stopped || tty->hw_stopped ||
!info->xmit.buf)
......@@ -269,8 +268,8 @@ static void rs_flush_chars(struct tty_struct *tty)
static int rs_write(struct tty_struct * tty,
const unsigned char *buf, int count)
{
struct serial_state *info = tty->driver_data;
int c, ret = 0;
struct async_struct *info = (struct async_struct *)tty->driver_data;
unsigned long flags;
if (!tty || !info->xmit.buf || !tmp_buf) return 0;
......@@ -303,21 +302,21 @@ static int rs_write(struct tty_struct * tty,
static int rs_write_room(struct tty_struct *tty)
{
struct async_struct *info = (struct async_struct *)tty->driver_data;
struct serial_state *info = tty->driver_data;
return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
}
static int rs_chars_in_buffer(struct tty_struct *tty)
{
struct async_struct *info = (struct async_struct *)tty->driver_data;
struct serial_state *info = tty->driver_data;
return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
}
static void rs_flush_buffer(struct tty_struct *tty)
{
struct async_struct *info = (struct async_struct *)tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long flags;
local_irq_save(flags);
......@@ -333,7 +332,7 @@ static void rs_flush_buffer(struct tty_struct *tty)
*/
static void rs_send_xchar(struct tty_struct *tty, char ch)
{
struct async_struct *info = (struct async_struct *)tty->driver_data;
struct serial_state *info = tty->driver_data;
info->x_char = ch;
if (ch) {
......@@ -362,7 +361,7 @@ static void rs_throttle(struct tty_struct * tty)
static void rs_unthrottle(struct tty_struct * tty)
{
struct async_struct *info = (struct async_struct *)tty->driver_data;
struct serial_state *info = tty->driver_data;
if (I_IXOFF(tty)) {
if (info->x_char)
......@@ -443,23 +442,22 @@ static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
* This routine will shutdown a serial port; interrupts are disabled, and
* DTR is dropped if the hangup on close termio flag is on.
*/
static void shutdown(struct async_struct * info)
static void shutdown(struct serial_state *info)
{
unsigned long flags;
struct serial_state *state = info->state;
if (!(state->flags & ASYNC_INITIALIZED))
if (!(info->flags & ASYNC_INITIALIZED))
return;
#ifdef SIMSERIAL_DEBUG
printk("Shutting down serial port %d (irq %d)....", info->line,
state->irq);
printk("Shutting down serial port %d (irq %d)...\n", info->line,
info->irq);
#endif
local_irq_save(flags);
{
if (state->irq)
free_irq(state->irq, info);
if (info->irq)
free_irq(info->irq, info);
if (info->xmit.buf) {
free_page((unsigned long) info->xmit.buf);
......@@ -468,7 +466,7 @@ static void shutdown(struct async_struct * info)
if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
state->flags &= ~ASYNC_INITIALIZED;
info->flags &= ~ASYNC_INITIALIZED;
}
local_irq_restore(flags);
}
......@@ -485,13 +483,11 @@ static void shutdown(struct async_struct * info)
*/
static void rs_close(struct tty_struct *tty, struct file * filp)
{
struct async_struct * info = (struct async_struct *)tty->driver_data;
struct serial_state *state;
struct serial_state *info = tty->driver_data;
unsigned long flags;
if (!info ) return;
state = info->state;
if (!info)
return;
local_irq_save(flags);
if (tty_hung_up_p(filp)) {
......@@ -502,30 +498,30 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
return;
}
#ifdef SIMSERIAL_DEBUG
printk("rs_close ttys%d, count = %d\n", info->line, state->count);
printk("rs_close ttys%d, count = %d\n", info->line, info->count);
#endif
if ((tty->count == 1) && (state->count != 1)) {
if ((tty->count == 1) && (info->count != 1)) {
/*
* Uh, oh. tty->count is 1, which means that the tty
* structure will be freed. state->count should always
* structure will be freed. info->count should always
* be one in these conditions. If it's greater than
* one, we've got real problems, since it means the
* serial port won't be shutdown.
*/
printk(KERN_ERR "rs_close: bad serial port count; tty->count is 1, "
"state->count is %d\n", state->count);
state->count = 1;
"info->count is %d\n", info->count);
info->count = 1;
}
if (--state->count < 0) {
if (--info->count < 0) {
printk(KERN_ERR "rs_close: bad serial port count for ttys%d: %d\n",
state->line, state->count);
state->count = 0;
info->line, info->count);
info->count = 0;
}
if (state->count) {
if (info->count) {
local_irq_restore(flags);
return;
}
state->flags |= ASYNC_CLOSING;
info->flags |= ASYNC_CLOSING;
local_irq_restore(flags);
/*
......@@ -537,11 +533,11 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
tty_ldisc_flush(tty);
info->tty = NULL;
if (info->blocked_open) {
if (state->close_delay)
schedule_timeout_interruptible(state->close_delay);
if (info->close_delay)
schedule_timeout_interruptible(info->close_delay);
wake_up_interruptible(&info->open_wait);
}
state->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
wake_up_interruptible(&info->close_wait);
}
......@@ -558,59 +554,28 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
*/
static void rs_hangup(struct tty_struct *tty)
{
struct async_struct * info = (struct async_struct *)tty->driver_data;
struct serial_state *state = info->state;
struct serial_state *info = tty->driver_data;
#ifdef SIMSERIAL_DEBUG
printk("rs_hangup: called\n");
#endif
rs_flush_buffer(tty);
if (state->flags & ASYNC_CLOSING)
if (info->flags & ASYNC_CLOSING)
return;
shutdown(info);
state->count = 0;
state->flags &= ~ASYNC_NORMAL_ACTIVE;
info->count = 0;
info->flags &= ~ASYNC_NORMAL_ACTIVE;
info->tty = NULL;
wake_up_interruptible(&info->open_wait);
}
static int get_async_struct(int line, struct async_struct **ret_info)
{
struct async_struct *info;
struct serial_state *sstate;
sstate = rs_table + line;
sstate->count++;
if (sstate->info) {
*ret_info = sstate->info;
return 0;
}
info = kzalloc(sizeof(struct async_struct), GFP_KERNEL);
if (!info) {
sstate->count--;
return -ENOMEM;
}
init_waitqueue_head(&info->open_wait);
init_waitqueue_head(&info->close_wait);
info->state = sstate;
if (sstate->info) {
kfree(info);
*ret_info = sstate->info;
return 0;
}
*ret_info = sstate->info = info;
return 0;
}
static int
startup(struct async_struct *info)
static int startup(struct serial_state *state)
{
unsigned long flags;
int retval=0;
struct serial_state *state= info->state;
unsigned long page;
page = get_zeroed_page(GFP_KERNEL);
......@@ -625,17 +590,18 @@ startup(struct async_struct *info)
}
if (!state->port || !state->type) {
if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
if (state->tty)
set_bit(TTY_IO_ERROR, &state->tty->flags);
free_page(page);
goto errout;
}
if (info->xmit.buf)
if (state->xmit.buf)
free_page(page);
else
info->xmit.buf = (unsigned char *) page;
state->xmit.buf = (unsigned char *) page;
#ifdef SIMSERIAL_DEBUG
printk("startup: ttys%d (irq %d)...", info->line, state->irq);
printk("startup: ttys%d (irq %d)...", state->line, state->irq);
#endif
/*
......@@ -643,14 +609,15 @@ startup(struct async_struct *info)
*/
if (state->irq) {
retval = request_irq(state->irq, rs_interrupt_single, 0,
"simserial", info);
"simserial", state);
if (retval)
goto errout;
}
if (info->tty) clear_bit(TTY_IO_ERROR, &info->tty->flags);
if (state->tty)
clear_bit(TTY_IO_ERROR, &state->tty->flags);
info->xmit.head = info->xmit.tail = 0;
state->xmit.head = state->xmit.tail = 0;
#if 0
/*
......@@ -663,15 +630,15 @@ startup(struct async_struct *info)
/*
* Set up the tty->alt_speed kludge
*/
if (info->tty) {
if (state->tty) {
if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
info->tty->alt_speed = 57600;
state->tty->alt_speed = 57600;
if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
info->tty->alt_speed = 115200;
state->tty->alt_speed = 115200;
if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
info->tty->alt_speed = 230400;
state->tty->alt_speed = 230400;
if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
info->tty->alt_speed = 460800;
state->tty->alt_speed = 460800;
}
state->flags |= ASYNC_INITIALIZED;
......@@ -692,20 +659,18 @@ startup(struct async_struct *info)
*/
static int rs_open(struct tty_struct *tty, struct file * filp)
{
struct async_struct *info;
struct serial_state *info = rs_table + tty->index;
int retval;
unsigned long page;
retval = get_async_struct(tty->index, &info);
if (retval)
return retval;
tty->driver_data = info;
info->count++;
info->tty = tty;
tty->driver_data = info;
#ifdef SIMSERIAL_DEBUG
printk("rs_open %s, count = %d\n", tty->name, info->state->count);
printk("rs_open %s, count = %d\n", tty->name, info->count);
#endif
info->tty->low_latency = (info->state->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
if (!tmp_buf) {
page = get_zeroed_page(GFP_KERNEL);
......@@ -720,12 +685,11 @@ static int rs_open(struct tty_struct *tty, struct file * filp)
/*
* If the port is the middle of closing, bail out now
*/
if (tty_hung_up_p(filp) ||
(info->state->flags & ASYNC_CLOSING)) {
if (info->state->flags & ASYNC_CLOSING)
if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) {
if (info->flags & ASYNC_CLOSING)
interruptible_sleep_on(&info->close_wait);
#ifdef SERIAL_DO_RESTART
return ((info->state->flags & ASYNC_HUP_NOTIFY) ?
return ((info->flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS);
#else
return -EAGAIN;
......@@ -865,6 +829,8 @@ simrs_init (void)
* Let's have a little bit of fun !
*/
for (i = 0, state = rs_table; i < NR_PORTS; i++,state++) {
init_waitqueue_head(&state->open_wait);
init_waitqueue_head(&state->close_wait);
if (state->type == PORT_UNKNOWN) continue;
......
drivers/tty/amiserial.c
View file @ 916b7656
......@@ -45,7 +45,7 @@
#if defined(MODULE) && defined(SERIAL_DEBUG_MCOUNT)
#define DBG_CNT(s) printk("(%s): [%x] refc=%d, serc=%d, ttyc=%d -> %s\n", \
tty->name, (info->state->flags), serial_driver->refcount,info->count,tty->count,s)
tty->name, (info->flags), serial_driver->refcount,info->count,tty->count,s)
#else
#define DBG_CNT(s)
#endif
......@@ -102,7 +102,7 @@ static struct tty_driver *serial_driver;
static unsigned char current_ctl_bits;
static void change_speed(struct async_struct *info, struct ktermios *old);
static void change_speed(struct serial_state *info, struct ktermios *old);
static void rs_wait_until_sent(struct tty_struct *tty, int timeout);
......@@ -115,7 +115,7 @@ static struct serial_state rs_table[1];
#define serial_isroot() (capable(CAP_SYS_ADMIN))
static inline int serial_paranoia_check(struct async_struct *info,
static inline int serial_paranoia_check(struct serial_state *info,
char *name, const char *routine)
{
#ifdef SERIAL_PARANOIA_CHECK
......@@ -168,7 +168,7 @@ static __inline__ void rtsdtr_ctrl(int bits)
*/
static void rs_stop(struct tty_struct *tty)
{
struct async_struct *info = tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_stop"))
......@@ -188,7 +188,7 @@ static void rs_stop(struct tty_struct *tty)
static void rs_start(struct tty_struct *tty)
{
struct async_struct *info = tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_start"))
......@@ -229,7 +229,7 @@ static void rs_start(struct tty_struct *tty)
* -----------------------------------------------------------------------
*/
static void receive_chars(struct async_struct *info)
static void receive_chars(struct serial_state *info)
{
int status;
int serdatr;
......@@ -238,7 +238,7 @@ static void receive_chars(struct async_struct *info)
struct async_icount *icount;
int oe = 0;
icount = &info->state->icount;
icount = &info->icount;
status = UART_LSR_DR; /* We obviously have a character! */
serdatr = custom.serdatr;
......@@ -295,7 +295,7 @@ static void receive_chars(struct async_struct *info)
printk("handling break....");
#endif
flag = TTY_BREAK;
if (info->state->flags & ASYNC_SAK)
if (info->flags & ASYNC_SAK)
do_SAK(tty);
} else if (status & UART_LSR_PE)
flag = TTY_PARITY;
......@@ -318,14 +318,14 @@ static void receive_chars(struct async_struct *info)
return;
}
static void transmit_chars(struct async_struct *info)
static void transmit_chars(struct serial_state *info)
{
custom.intreq = IF_TBE;
mb();
if (info->x_char) {
custom.serdat = info->x_char | 0x100;
mb();
info->state->icount.tx++;
info->icount.tx++;
info->x_char = 0;
return;
}
......@@ -341,7 +341,7 @@ static void transmit_chars(struct async_struct *info)
custom.serdat = info->xmit.buf[info->xmit.tail++] | 0x100;
mb();
info->xmit.tail = info->xmit.tail & (SERIAL_XMIT_SIZE-1);
info->state->icount.tx++;
info->icount.tx++;
if (CIRC_CNT(info->xmit.head,
info->xmit.tail,
......@@ -358,7 +358,7 @@ static void transmit_chars(struct async_struct *info)
}
}
static void check_modem_status(struct async_struct *info)
static void check_modem_status(struct serial_state *info)
{
unsigned char status = ciab.pra & (SER_DCD | SER_CTS | SER_DSR);
unsigned char dstatus;
......@@ -369,14 +369,14 @@ static void check_modem_status(struct async_struct *info)
current_ctl_bits = status;
if (dstatus) {
icount = &info->state->icount;
icount = &info->icount;
/* update input line counters */
if (dstatus & SER_DSR)
icount->dsr++;
if (dstatus & SER_DCD) {
icount->dcd++;
#ifdef CONFIG_HARD_PPS
if ((info->state->flags & ASYNC_HARDPPS_CD) &&
if ((info->flags & ASYNC_HARDPPS_CD) &&
!(status & SER_DCD))
hardpps();
#endif
......@@ -386,7 +386,7 @@ static void check_modem_status(struct async_struct *info)
wake_up_interruptible(&info->delta_msr_wait);
}
if ((info->state->flags & ASYNC_CHECK_CD) && (dstatus & SER_DCD)) {
if ((info->flags & ASYNC_CHECK_CD) && (dstatus & SER_DCD)) {
#if (defined(SERIAL_DEBUG_OPEN) || defined(SERIAL_DEBUG_INTR))
printk("ttyS%d CD now %s...", info->line,
(!(status & SER_DCD)) ? "on" : "off");
......@@ -401,7 +401,7 @@ static void check_modem_status(struct async_struct *info)
tty_hangup(info->tty);
}
}
if (info->state->flags & ASYNC_CTS_FLOW) {
if (info->flags & ASYNC_CTS_FLOW) {
if (info->tty->hw_stopped) {
if (!(status & SER_CTS)) {
#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW))
......@@ -437,7 +437,7 @@ static void check_modem_status(struct async_struct *info)
static irqreturn_t ser_vbl_int( int irq, void *data)
{
/* vbl is just a periodic interrupt we tie into to update modem status */
struct async_struct *info = data;
struct serial_state *info = data;
/*
* TBD - is it better to unregister from this interrupt or to
* ignore it if MSI is clear ?
......@@ -449,14 +449,13 @@ static irqreturn_t ser_vbl_int( int irq, void *data)
static irqreturn_t ser_rx_int(int irq, void *dev_id)
{
struct serial_state *state = dev_id;
struct async_struct *info = state->info;
struct serial_state *info = dev_id;
#ifdef SERIAL_DEBUG_INTR
printk("ser_rx_int...");
#endif
if (!info || !info->tty)
if (!info->tty)
return IRQ_NONE;
receive_chars(info);
......@@ -468,15 +467,14 @@ static irqreturn_t ser_rx_int(int irq, void *dev_id)
static irqreturn_t ser_tx_int(int irq, void *dev_id)
{
struct serial_state *state = dev_id;
struct async_struct *info = state->info;
struct serial_state *info = dev_id;
if (custom.serdatr & SDR_TBE) {
#ifdef SERIAL_DEBUG_INTR
printk("ser_tx_int...");
#endif
if (!info || !info->tty)
if (!info->tty)
return IRQ_NONE;
transmit_chars(info);
......@@ -502,7 +500,7 @@ static irqreturn_t ser_tx_int(int irq, void *dev_id)
* ---------------------------------------------------------------
*/
static int startup(struct async_struct * info)
static int startup(struct serial_state *info)
{
unsigned long flags;
int retval=0;
......@@ -514,7 +512,7 @@ static int startup(struct async_struct * info)
local_irq_save(flags);
if (info->state->flags & ASYNC_INITIALIZED) {
if (info->flags & ASYNC_INITIALIZED) {
free_page(page);
goto errout;
}
......@@ -565,13 +563,13 @@ static int startup(struct async_struct * info)
* Set up the tty->alt_speed kludge
*/
if (info->tty) {
if ((info->state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
info->tty->alt_speed = 57600;
if ((info->state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
info->tty->alt_speed = 115200;
if ((info->state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
info->tty->alt_speed = 230400;
if ((info->state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
info->tty->alt_speed = 460800;
}
......@@ -580,7 +578,7 @@ static int startup(struct async_struct * info)
*/
change_speed(info, NULL);
info->state->flags |= ASYNC_INITIALIZED;
info->flags |= ASYNC_INITIALIZED;
local_irq_restore(flags);
return 0;
......@@ -593,15 +591,15 @@ static int startup(struct async_struct * info)
* This routine will shutdown a serial port; interrupts are disabled, and
* DTR is dropped if the hangup on close termio flag is on.
*/
static void shutdown(struct async_struct * info)
static void shutdown(struct serial_state *info)
{
unsigned long flags;
struct serial_state *state;
if (!(info->state->flags & ASYNC_INITIALIZED))
if (!(info->flags & ASYNC_INITIALIZED))
return;
state = info->state;
state = info;
#ifdef SERIAL_DEBUG_OPEN
printk("Shutting down serial port %d ....\n", info->line);
......@@ -640,7 +638,7 @@ static void shutdown(struct async_struct * info)
if (info->tty)
set_bit(TTY_IO_ERROR, &info->tty->flags);
info->state->flags &= ~ASYNC_INITIALIZED;
info->flags &= ~ASYNC_INITIALIZED;
local_irq_restore(flags);
}
......@@ -649,7 +647,7 @@ static void shutdown(struct async_struct * info)
* This routine is called to set the UART divisor registers to match
* the specified baud rate for a serial port.
*/
static void change_speed(struct async_struct *info,
static void change_speed(struct serial_state *info,
struct ktermios *old_termios)
{
int quot = 0, baud_base, baud;
......@@ -683,10 +681,10 @@ static void change_speed(struct async_struct *info,
baud = tty_get_baud_rate(info->tty);
if (!baud)
baud = 9600; /* B0 transition handled in rs_set_termios */
baud_base = info->state->baud_base;
baud_base = info->baud_base;
if (baud == 38400 &&
((info->state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST))
quot = info->state->custom_divisor;
((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST))
quot = info->custom_divisor;
else {
if (baud == 134)
/* Special case since 134 is really 134.5 */
......@@ -703,8 +701,8 @@ static void change_speed(struct async_struct *info,
if (!baud)
baud = 9600;
if (baud == 38400 &&
((info->state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST))
quot = info->state->custom_divisor;
((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST))
quot = info->custom_divisor;
else {
if (baud == 134)
/* Special case since 134 is really 134.5 */
......@@ -717,22 +715,22 @@ static void change_speed(struct async_struct *info,
if (!quot)
quot = baud_base / 9600;
info->quot = quot;
info->timeout = ((info->state->xmit_fifo_size*HZ*bits*quot) / baud_base);
info->timeout = ((info->xmit_fifo_size*HZ*bits*quot) / baud_base);
info->timeout += HZ/50; /* Add .02 seconds of slop */
/* CTS flow control flag and modem status interrupts */
info->IER &= ~UART_IER_MSI;
if (info->state->flags & ASYNC_HARDPPS_CD)
if (info->flags & ASYNC_HARDPPS_CD)
info->IER |= UART_IER_MSI;
if (cflag & CRTSCTS) {
info->state->flags |= ASYNC_CTS_FLOW;
info->flags |= ASYNC_CTS_FLOW;
info->IER |= UART_IER_MSI;
} else
info->state->flags &= ~ASYNC_CTS_FLOW;
info->flags &= ~ASYNC_CTS_FLOW;
if (cflag & CLOCAL)
info->state->flags &= ~ASYNC_CHECK_CD;
info->flags &= ~ASYNC_CHECK_CD;
else {
info->state->flags |= ASYNC_CHECK_CD;
info->flags |= ASYNC_CHECK_CD;
info->IER |= UART_IER_MSI;
}
/* TBD:
......@@ -791,7 +789,7 @@ static void change_speed(struct async_struct *info,
static int rs_put_char(struct tty_struct *tty, unsigned char ch)
{
struct async_struct *info;
struct serial_state *info;
unsigned long flags;
info = tty->driver_data;
......@@ -818,7 +816,7 @@ static int rs_put_char(struct tty_struct *tty, unsigned char ch)
static void rs_flush_chars(struct tty_struct *tty)
{
struct async_struct *info = tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_flush_chars"))
......@@ -843,11 +841,9 @@ static void rs_flush_chars(struct tty_struct *tty)
static int rs_write(struct tty_struct * tty, const unsigned char *buf, int count)
{
int c, ret = 0;
struct async_struct *info;
struct serial_state *info = tty->driver_data;
unsigned long flags;
info = tty->driver_data;
if (serial_paranoia_check(info, tty->name, "rs_write"))
return 0;
......@@ -891,7 +887,7 @@ static int rs_write(struct tty_struct * tty, const unsigned char *buf, int count
static int rs_write_room(struct tty_struct *tty)
{
struct async_struct *info = tty->driver_data;
struct serial_state *info = tty->driver_data;
if (serial_paranoia_check(info, tty->name, "rs_write_room"))
return 0;
......@@ -900,7 +896,7 @@ static int rs_write_room(struct tty_struct *tty)
static int rs_chars_in_buffer(struct tty_struct *tty)
{
struct async_struct *info = tty->driver_data;
struct serial_state *info = tty->driver_data;
if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer"))
return 0;
......@@ -909,7 +905,7 @@ static int rs_chars_in_buffer(struct tty_struct *tty)
static void rs_flush_buffer(struct tty_struct *tty)
{
struct async_struct *info = tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_flush_buffer"))
......@@ -926,7 +922,7 @@ static void rs_flush_buffer(struct tty_struct *tty)
*/
static void rs_send_xchar(struct tty_struct *tty, char ch)
{
struct async_struct *info = tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_send_char"))
......@@ -961,7 +957,7 @@ static void rs_send_xchar(struct tty_struct *tty, char ch)
*/
static void rs_throttle(struct tty_struct * tty)
{
struct async_struct *info = tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long flags;
#ifdef SERIAL_DEBUG_THROTTLE
char buf[64];
......@@ -986,7 +982,7 @@ static void rs_throttle(struct tty_struct * tty)
static void rs_unthrottle(struct tty_struct * tty)
{
struct async_struct *info = tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long flags;
#ifdef SERIAL_DEBUG_THROTTLE
char buf[64];
......@@ -1017,11 +1013,10 @@ static void rs_unthrottle(struct tty_struct * tty)
* ------------------------------------------------------------
*/
static int get_serial_info(struct async_struct * info,
static int get_serial_info(struct serial_state *state,
struct serial_struct __user * retinfo)
{
struct serial_struct tmp;
struct serial_state *state = info->state;
if (!retinfo)
return -EFAULT;
......@@ -1043,11 +1038,11 @@ static int get_serial_info(struct async_struct * info,
return 0;
}
static int set_serial_info(struct async_struct * info,
static int set_serial_info(struct serial_state *state,
struct serial_struct __user * new_info)
{
struct serial_struct new_serial;
struct serial_state old_state, *state;
struct serial_state old_state;
unsigned int change_irq,change_port;
int retval = 0;
......@@ -1055,7 +1050,6 @@ static int set_serial_info(struct async_struct * info,
return -EFAULT;
tty_lock();
state = info->state;
old_state = *state;
change_irq = new_serial.irq != state->irq;
......@@ -1094,7 +1088,7 @@ static int set_serial_info(struct async_struct * info,
state->custom_divisor = new_serial.custom_divisor;
state->close_delay = new_serial.close_delay * HZ/100;
state->closing_wait = new_serial.closing_wait * HZ/100;
info->tty->low_latency = (state->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
state->tty->low_latency = (state->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
check_and_exit:
if (state->flags & ASYNC_INITIALIZED) {
......@@ -1102,17 +1096,17 @@ static int set_serial_info(struct async_struct * info,
(state->flags & ASYNC_SPD_MASK)) ||
(old_state.custom_divisor != state->custom_divisor)) {
if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
info->tty->alt_speed = 57600;
state->tty->alt_speed = 57600;
if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
info->tty->alt_speed = 115200;
state->tty->alt_speed = 115200;
if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
info->tty->alt_speed = 230400;
state->tty->alt_speed = 230400;
if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
info->tty->alt_speed = 460800;
change_speed(info, NULL);
state->tty->alt_speed = 460800;
change_speed(state, NULL);
}
} else
retval = startup(info);
retval = startup(state);
tty_unlock();
return retval;
}
......@@ -1128,7 +1122,7 @@ static int set_serial_info(struct async_struct * info,
* transmit holding register is empty. This functionality
* allows an RS485 driver to be written in user space.
*/
static int get_lsr_info(struct async_struct * info, unsigned int __user *value)
static int get_lsr_info(struct serial_state *info, unsigned int __user *value)
{
unsigned char status;
unsigned int result;
......@@ -1147,7 +1141,7 @@ static int get_lsr_info(struct async_struct * info, unsigned int __user *value)
static int rs_tiocmget(struct tty_struct *tty)
{
struct async_struct * info = tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned char control, status;
unsigned long flags;
......@@ -1170,7 +1164,7 @@ static int rs_tiocmget(struct tty_struct *tty)
static int rs_tiocmset(struct tty_struct *tty, unsigned int set,
unsigned int clear)
{
struct async_struct * info = tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_ioctl"))
......@@ -1197,7 +1191,7 @@ static int rs_tiocmset(struct tty_struct *tty, unsigned int set,
*/
static int rs_break(struct tty_struct *tty, int break_state)
{
struct async_struct * info = tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_break"))
......@@ -1222,12 +1216,12 @@ static int rs_break(struct tty_struct *tty, int break_state)
static int rs_get_icount(struct tty_struct *tty,
struct serial_icounter_struct *icount)
{
struct async_struct *info = tty->driver_data;
struct serial_state *info = tty->driver_data;
struct async_icount cnow;
unsigned long flags;
local_irq_save(flags);
cnow = info->state->icount;
cnow = info->icount;
local_irq_restore(flags);
icount->cts = cnow.cts;
icount->dsr = cnow.dsr;
......@@ -1247,7 +1241,7 @@ static int rs_get_icount(struct tty_struct *tty,
static int rs_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
struct async_struct * info = tty->driver_data;
struct serial_state *info = tty->driver_data;
struct async_icount cprev, cnow; /* kernel counter temps */
void __user *argp = (void __user *)arg;
unsigned long flags;
......@@ -1275,7 +1269,7 @@ static int rs_ioctl(struct tty_struct *tty,
case TIOCSERGSTRUCT:
if (copy_to_user(argp,
info, sizeof(struct async_struct)))
info, sizeof(struct serial_state)))
return -EFAULT;
return 0;
......@@ -1288,7 +1282,7 @@ static int rs_ioctl(struct tty_struct *tty,
case TIOCMIWAIT:
local_irq_save(flags);
/* note the counters on entry */
cprev = info->state->icount;
cprev = info->icount;
local_irq_restore(flags);
while (1) {
interruptible_sleep_on(&info->delta_msr_wait);
......@@ -1296,7 +1290,7 @@ static int rs_ioctl(struct tty_struct *tty,
if (signal_pending(current))
return -ERESTARTSYS;
local_irq_save(flags);
cnow = info->state->icount; /* atomic copy */
cnow = info->icount; /* atomic copy */
local_irq_restore(flags);
if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
......@@ -1325,7 +1319,7 @@ static int rs_ioctl(struct tty_struct *tty,
static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
struct async_struct *info = tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long flags;
unsigned int cflag = tty->termios->c_cflag;
......@@ -1385,15 +1379,12 @@ static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
*/
static void rs_close(struct tty_struct *tty, struct file * filp)
{
struct async_struct * info = tty->driver_data;
struct serial_state *state;
struct serial_state *state = tty->driver_data;
unsigned long flags;
if (!info || serial_paranoia_check(info, tty->name, "rs_close"))
if (!state || serial_paranoia_check(state, tty->name, "rs_close"))
return;
state = info->state;
local_irq_save(flags);
if (tty_hung_up_p(filp)) {
......@@ -1403,7 +1394,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
}
#ifdef SERIAL_DEBUG_OPEN
printk("rs_close ttys%d, count = %d\n", info->line, state->count);
printk("rs_close ttys%d, count = %d\n", state->line, state->count);
#endif
if ((tty->count == 1) && (state->count != 1)) {
/*
......@@ -1441,7 +1432,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
* interrupt driver to stop checking the data ready bit in the
* line status register.
*/
info->read_status_mask &= ~UART_LSR_DR;
state->read_status_mask &= ~UART_LSR_DR;
if (state->flags & ASYNC_INITIALIZED) {
/* disable receive interrupts */
custom.intena = IF_RBF;
......@@ -1455,22 +1446,22 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
* has completely drained; this is especially
* important if there is a transmit FIFO!
*/
rs_wait_until_sent(tty, info->timeout);
rs_wait_until_sent(tty, state->timeout);
}
shutdown(info);
shutdown(state);
rs_flush_buffer(tty);
tty_ldisc_flush(tty);
tty->closing = 0;
info->tty = NULL;
if (info->blocked_open) {
state->tty = NULL;
if (state->blocked_open) {
if (state->close_delay) {
msleep_interruptible(jiffies_to_msecs(state->close_delay));
}
wake_up_interruptible(&info->open_wait);
wake_up_interruptible(&state->open_wait);
}
state->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
wake_up_interruptible(&info->close_wait);
wake_up_interruptible(&state->close_wait);
local_irq_restore(flags);
}
......@@ -1479,14 +1470,14 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
*/
static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
{
struct async_struct * info = tty->driver_data;
struct serial_state *info = tty->driver_data;
unsigned long orig_jiffies, char_time;
int lsr;
if (serial_paranoia_check(info, tty->name, "rs_wait_until_sent"))
return;
if (info->state->xmit_fifo_size == 0)
if (info->xmit_fifo_size == 0)
return; /* Just in case.... */
orig_jiffies = jiffies;
......@@ -1499,7 +1490,7 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
* Note: we have to use pretty tight timings here to satisfy
* the NIST-PCTS.
*/
char_time = (info->timeout - HZ/50) / info->state->xmit_fifo_size;
char_time = (info->timeout - HZ/50) / info->xmit_fifo_size;
char_time = char_time / 5;
if (char_time == 0)
char_time = 1;
......@@ -1542,18 +1533,15 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
*/
static void rs_hangup(struct tty_struct *tty)
{
struct async_struct * info = tty->driver_data;
struct serial_state *state = info->state;
struct serial_state *info = tty->driver_data;
if (serial_paranoia_check(info, tty->name, "rs_hangup"))
return;
state = info->state;
rs_flush_buffer(tty);
shutdown(info);
state->count = 0;
state->flags &= ~ASYNC_NORMAL_ACTIVE;
info->count = 0;
info->flags &= ~ASYNC_NORMAL_ACTIVE;
info->tty = NULL;
wake_up_interruptible(&info->open_wait);
}
......@@ -1564,14 +1552,13 @@ static void rs_hangup(struct tty_struct *tty)
* ------------------------------------------------------------
*/
static int block_til_ready(struct tty_struct *tty, struct file * filp,
struct async_struct *info)
struct serial_state *info)
{
#ifdef DECLARE_WAITQUEUE
DECLARE_WAITQUEUE(wait, current);
#else
struct wait_queue wait = { current, NULL };
#endif
struct serial_state *state = info->state;
int retval;
int do_clocal = 0, extra_count = 0;
unsigned long flags;
......@@ -1581,11 +1568,11 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
* until it's done, and then try again.
*/
if (tty_hung_up_p(filp) ||
(state->flags & ASYNC_CLOSING)) {
if (state->flags & ASYNC_CLOSING)
(info->flags & ASYNC_CLOSING)) {
if (info->flags & ASYNC_CLOSING)
interruptible_sleep_on(&info->close_wait);
#ifdef SERIAL_DO_RESTART
return ((state->flags & ASYNC_HUP_NOTIFY) ?
return ((info->flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS);
#else
return -EAGAIN;
......@@ -1598,7 +1585,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
*/
if ((filp->f_flags & O_NONBLOCK) ||
(tty->flags & (1 << TTY_IO_ERROR))) {
state->flags |= ASYNC_NORMAL_ACTIVE;
info->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
......@@ -1608,7 +1595,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
/*
* Block waiting for the carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
* this loop, state->count is dropped by one, so that
* this loop, info->count is dropped by one, so that
* rs_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
......@@ -1616,12 +1603,12 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
add_wait_queue(&info->open_wait, &wait);
#ifdef SERIAL_DEBUG_OPEN
printk("block_til_ready before block: ttys%d, count = %d\n",
state->line, state->count);
info->line, info->count);
#endif
local_irq_save(flags);
if (!tty_hung_up_p(filp)) {
extra_count = 1;
state->count--;
info->count--;
}
local_irq_restore(flags);
info->blocked_open++;
......@@ -1632,9 +1619,9 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
local_irq_restore(flags);
set_current_state(TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) ||
!(state->flags & ASYNC_INITIALIZED)) {
!(info->flags & ASYNC_INITIALIZED)) {
#ifdef SERIAL_DO_RESTART
if (state->flags & ASYNC_HUP_NOTIFY)
if (info->flags & ASYNC_HUP_NOTIFY)
retval = -EAGAIN;
else
retval = -ERESTARTSYS;
......@@ -1643,7 +1630,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
#endif
break;
}
if (!(state->flags & ASYNC_CLOSING) &&
if (!(info->flags & ASYNC_CLOSING) &&
(do_clocal || (!(ciab.pra & SER_DCD)) ))
break;
if (signal_pending(current)) {
......@@ -1652,7 +1639,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
}
#ifdef SERIAL_DEBUG_OPEN
printk("block_til_ready blocking: ttys%d, count = %d\n",
info->line, state->count);
info->line, info->count);
#endif
tty_unlock();
schedule();
......@@ -1661,46 +1648,15 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
__set_current_state(TASK_RUNNING);
remove_wait_queue(&info->open_wait, &wait);
if (extra_count)
state->count++;
info->count++;
info->blocked_open--;
#ifdef SERIAL_DEBUG_OPEN
printk("block_til_ready after blocking: ttys%d, count = %d\n",
info->line, state->count);
info->line, info->count);
#endif
if (retval)
return retval;
state->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
static int get_async_struct(int line, struct async_struct **ret_info)
{
struct async_struct *info;
struct serial_state *sstate;
sstate = rs_table + line;
sstate->count++;
if (sstate->info) {
*ret_info = sstate->info;
return 0;
}
info = kzalloc(sizeof(struct async_struct), GFP_KERNEL);
if (!info) {
sstate->count--;
return -ENOMEM;
}
#ifdef DECLARE_WAITQUEUE
init_waitqueue_head(&info->open_wait);
init_waitqueue_head(&info->close_wait);
init_waitqueue_head(&info->delta_msr_wait);
#endif
info->state = sstate;
if (sstate->info) {
kfree(info);
*ret_info = sstate->info;
return 0;
}
*ret_info = sstate->info = info;
info->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
......@@ -1712,32 +1668,29 @@ static int get_async_struct(int line, struct async_struct **ret_info)
*/
static int rs_open(struct tty_struct *tty, struct file * filp)
{
struct async_struct *info;
struct serial_state *info = rs_table + tty->index;
int retval;
retval = get_async_struct(tty->index, &info);
if (retval) {
return retval;
}
tty->driver_data = info;
info->count++;
info->tty = tty;
tty->driver_data = info;
if (serial_paranoia_check(info, tty->name, "rs_open"))
return -ENODEV;
#ifdef SERIAL_DEBUG_OPEN
printk("rs_open %s, count = %d\n", tty->name, info->state->count);
printk("rs_open %s, count = %d\n", tty->name, info->count);
#endif
info->tty->low_latency = (info->state->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
/*
* If the port is the middle of closing, bail out now
*/
if (tty_hung_up_p(filp) ||
(info->state->flags & ASYNC_CLOSING)) {
if (info->state->flags & ASYNC_CLOSING)
(info->flags & ASYNC_CLOSING)) {
if (info->flags & ASYNC_CLOSING)
interruptible_sleep_on(&info->close_wait);
#ifdef SERIAL_DO_RESTART
return ((info->state->flags & ASYNC_HUP_NOTIFY) ?
return ((info->flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS);
#else
return -EAGAIN;
......@@ -1773,24 +1726,14 @@ static int rs_open(struct tty_struct *tty, struct file * filp)
static inline void line_info(struct seq_file *m, struct serial_state *state)
{
struct async_struct *info = state->info, scr_info;
char stat_buf[30], control, status;
unsigned long flags;
seq_printf(m, "%d: uart:amiga_builtin",state->line);
/*
* Figure out the current RS-232 lines
*/
if (!info) {
info = &scr_info; /* This is just for serial_{in,out} */
info->quot = 0;
info->tty = NULL;
}
local_irq_save(flags);
status = ciab.pra;
control = info ? info->MCR : status;
control = (state->flags & ASYNC_INITIALIZED) ? state->MCR : status;
local_irq_restore(flags);
stat_buf[0] = 0;
......@@ -1806,9 +1749,8 @@ static inline void line_info(struct seq_file *m, struct serial_state *state)
if(!(status & SER_DCD))
strcat(stat_buf, "|CD");
if (info->quot) {
seq_printf(m, " baud:%d", state->baud_base / info->quot);
}
if (state->quot)
seq_printf(m, " baud:%d", state->baud_base / state->quot);
seq_printf(m, " tx:%d rx:%d", state->icount.tx, state->icount.rx);
......@@ -1938,6 +1880,9 @@ static int __init amiga_serial_probe(struct platform_device *pdev)
state->icount.rx = state->icount.tx = 0;
state->icount.frame = state->icount.parity = 0;
state->icount.overrun = state->icount.brk = 0;
init_waitqueue_head(&state->open_wait);
init_waitqueue_head(&state->close_wait);
init_waitqueue_head(&state->delta_msr_wait);
printk(KERN_INFO "ttyS%d is the amiga builtin serial port\n",
state->line);
......@@ -1993,7 +1938,6 @@ static int __exit amiga_serial_remove(struct platform_device *pdev)
{
int error;
struct serial_state *state = platform_get_drvdata(pdev);
struct async_struct *info = state->info;
/* printk("Unloading %s: version %s\n", serial_name, serial_version); */
if ((error = tty_unregister_driver(serial_driver)))
......@@ -2001,11 +1945,8 @@ static int __exit amiga_serial_remove(struct platform_device *pdev)
error);
put_tty_driver(serial_driver);
rs_table[0].info = NULL;
kfree(info);
free_irq(IRQ_AMIGA_TBE, rs_table);
free_irq(IRQ_AMIGA_RBF, rs_table);
free_irq(IRQ_AMIGA_TBE, state);
free_irq(IRQ_AMIGA_RBF, state);
platform_set_drvdata(pdev, NULL);
......
include/linux/serialP.h
View file @ 916b7656
......@@ -38,24 +38,24 @@ struct serial_state {
unsigned short close_delay;
unsigned short closing_wait; /* time to wait before closing */
struct async_icount icount;
struct async_struct *info;
};
struct async_struct {
struct serial_state *state;
struct tty_struct *tty;
/* amiserial */
int read_status_mask;
int ignore_status_mask;
int timeout;
int quot;
int x_char; /* xon/xoff character */
int IER; /* Interrupt Enable Register */
int MCR; /* Modem control register */
wait_queue_head_t delta_msr_wait;
/* simserial */
int x_char; /* xon/xoff character */
int blocked_open; /* # of blocked opens */
struct circ_buf xmit;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
wait_queue_head_t delta_msr_wait;
struct tty_struct *tty;
/* /simserial */
/* /amiserial */
};
#endif /* _LINUX_SERIAL_H */
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