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Date: Mon, 2 Apr 2012 13:54:40 +0200
From: Jiri Slaby <jslaby@...e.cz>
To: gregkh@...uxfoundation.org
Cc: alan@...ux.intel.com, linux-kernel@...r.kernel.org,
jirislaby@...il.com, Geert Uytterhoeven <geert@...ux-m68k.org>,
linux-m68k@...ts.linux-m68k.org
Subject: [PATCH 56/69] TTY: 68328serial, add tty_port
And use count and blocked_count from that.
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: linux-m68k@...ts.linux-m68k.org
---
drivers/tty/serial/68328serial.c | 40 +++++++++++++++++++-------------------
1 file changed, 20 insertions(+), 20 deletions(-)
diff --git a/drivers/tty/serial/68328serial.c b/drivers/tty/serial/68328serial.c
index 116d932..848662c 100644
--- a/drivers/tty/serial/68328serial.c
+++ b/drivers/tty/serial/68328serial.c
@@ -109,6 +109,7 @@
* For definitions of the flags field, see serial.h
*/
struct m68k_serial {
+ struct tty_port tport;
char is_cons; /* Is this our console. */
int magic;
int baud_base;
@@ -122,8 +123,6 @@ struct m68k_serial {
int close_delay;
unsigned short closing_wait;
int line;
- int count; /* # of fd on device */
- int blocked_open; /* # of blocked opens */
unsigned char *xmit_buf;
int xmit_head;
int xmit_tail;
@@ -866,7 +865,7 @@ static int set_serial_info(struct m68k_serial * info,
goto check_and_exit;
}
- if (info->count > 1)
+ if (info->tport.count > 1)
return -EBUSY;
/*
@@ -1010,6 +1009,7 @@ 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 m68k_serial * info = (struct m68k_serial *)tty->driver_data;
+ struct tty_port *port = &info->tport;
m68328_uart *uart = &uart_addr[info->line];
unsigned long flags;
@@ -1023,7 +1023,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
return;
}
- if ((tty->count == 1) && (info->count != 1)) {
+ if ((tty->count == 1) && (port->count != 1)) {
/*
* Uh, oh. tty->count is 1, which means that the tty
* structure will be freed. Info->count should always
@@ -1032,15 +1032,15 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
* serial port won't be shutdown.
*/
printk("rs_close: bad serial port count; tty->count is 1, "
- "info->count is %d\n", info->count);
- info->count = 1;
+ "port->count is %d\n", port->count);
+ port->count = 1;
}
- if (--info->count < 0) {
+ if (--port->count < 0) {
printk("rs_close: bad serial port count for ttyS%d: %d\n",
- info->line, info->count);
- info->count = 0;
+ info->line, port->count);
+ port->count = 0;
}
- if (info->count) {
+ if (port->count) {
local_irq_restore(flags);
return;
}
@@ -1079,7 +1079,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
(tty->ldisc.open)(tty);
}
#endif
- if (info->blocked_open) {
+ if (port->blocked_open) {
if (info->close_delay) {
msleep_interruptible(jiffies_to_msecs(info->close_delay));
}
@@ -1102,7 +1102,7 @@ void rs_hangup(struct tty_struct *tty)
rs_flush_buffer(tty);
shutdown(info);
- info->count = 0;
+ info->tport.count = 0;
info->flags &= ~ASYNC_NORMAL_ACTIVE;
info->tty = NULL;
wake_up_interruptible(&info->open_wait);
@@ -1116,6 +1116,7 @@ void rs_hangup(struct tty_struct *tty)
static int block_til_ready(struct tty_struct *tty, struct file * filp,
struct m68k_serial *info)
{
+ struct tty_port *port = &info->tport;
DECLARE_WAITQUEUE(wait, current);
int retval;
int do_clocal = 0;
@@ -1152,15 +1153,15 @@ 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, info->count is dropped by one, so that
+ * this loop, port->count is dropped by one, so that
* rs_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
add_wait_queue(&info->open_wait, &wait);
- info->count--;
- info->blocked_open++;
+ port->count--;
+ port->blocked_open++;
while (1) {
current->state = TASK_INTERRUPTIBLE;
if (tty_hung_up_p(filp) ||
@@ -1188,8 +1189,8 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
current->state = TASK_RUNNING;
remove_wait_queue(&info->open_wait, &wait);
if (!tty_hung_up_p(filp))
- info->count++;
- info->blocked_open--;
+ port->count++;
+ port->blocked_open--;
if (retval)
return retval;
@@ -1213,7 +1214,7 @@ int rs_open(struct tty_struct *tty, struct file * filp)
if (serial_paranoia_check(info, tty->name, "rs_open"))
return -ENODEV;
- info->count++;
+ info->tport.count++;
tty->driver_data = info;
info->tty = tty;
@@ -1291,6 +1292,7 @@ rs68328_init(void)
for(i=0;i<NR_PORTS;i++) {
info = &m68k_soft[i];
+ tty_port_init(&info->tport);
info->magic = SERIAL_MAGIC;
info->port = (int) &uart_addr[i];
info->tty = NULL;
@@ -1299,8 +1301,6 @@ rs68328_init(void)
info->close_delay = 50;
info->closing_wait = 3000;
info->x_char = 0;
- info->count = 0;
- info->blocked_open = 0;
init_waitqueue_head(&info->open_wait);
init_waitqueue_head(&info->close_wait);
info->line = i;
--
1.7.9.2
--
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