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Subject[PATCH 05/69] TTY: isdn, remove callout
Date
I wonder how this survived there during the whole 2.6 series until now
:D.

Callouts are not used for a decade, so let us remove it also from
isdn. This means removal of ISDN_ASYNC_CALLOUT_ACTIVE which is never
raised in info->flags and callout_termios which are never used.

This will help us to get rid of ISDN_ASYNC_* flags and use ASYNC ones
from serial.h. And then we will switch to tty_port.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Karsten Keil <isdn@linux-pingi.de>
---
drivers/isdn/i4l/isdn_tty.c | 32 ++++++--------------------------
include/linux/isdn.h | 3 ---
2 files changed, 6 insertions(+), 29 deletions(-)

diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index 1d701cd..27f7092 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -1504,18 +1504,11 @@ isdn_tty_block_til_ready(struct tty_struct *tty, struct file *filp, modem_info *
*/
if ((filp->f_flags & O_NONBLOCK) ||
(tty->flags & (1 << TTY_IO_ERROR))) {
- if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE)
- return -EBUSY;
info->flags |= ISDN_ASYNC_NORMAL_ACTIVE;
return 0;
}
- if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) {
- if (info->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
* free (i.e., not in use by the callout). While we are in
@@ -1546,8 +1539,7 @@ isdn_tty_block_til_ready(struct tty_struct *tty, struct file *filp, modem_info *
#endif
break;
}
- if (!(info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) &&
- !(info->flags & ISDN_ASYNC_CLOSING) &&
+ if (!(info->flags & ISDN_ASYNC_CLOSING) &&
(do_clocal || (info->msr & UART_MSR_DCD))) {
break;
}
@@ -1670,14 +1662,6 @@ isdn_tty_close(struct tty_struct *tty, struct file *filp)
return;
}
info->flags |= ISDN_ASYNC_CLOSING;
- /*
- * Save the termios structure, since this port may have
- * separate termios for callout and dialin.
- */
- if (info->flags & ISDN_ASYNC_NORMAL_ACTIVE)
- info->normal_termios = *tty->termios;
- if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE)
- info->callout_termios = *tty->termios;

tty->closing = 1;
/*
@@ -1731,7 +1715,7 @@ isdn_tty_hangup(struct tty_struct *tty)
return;
isdn_tty_shutdown(info);
info->count = 0;
- info->flags &= ~(ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CALLOUT_ACTIVE);
+ info->flags &= ~ISDN_ASYNC_NORMAL_ACTIVE;
info->tty = NULL;
wake_up_interruptible(&info->open_wait);
}
@@ -2116,8 +2100,7 @@ isdn_tty_find_icall(int di, int ch, setup_parm *setup)
return (wret == 2) ? 3 : 0;
}

-#define TTY_IS_ACTIVE(info) \
- (info->flags & (ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CALLOUT_ACTIVE))
+#define TTY_IS_ACTIVE(info) (info->flags & ISDN_ASYNC_NORMAL_ACTIVE)

int
isdn_tty_stat_callback(int i, isdn_ctrl *c)
@@ -2628,11 +2611,8 @@ isdn_tty_modem_result(int code, modem_info *info)
if ((info->flags & ISDN_ASYNC_CLOSING) || (!info->tty)) {
return;
}
- if ((info->flags & ISDN_ASYNC_CHECK_CD) &&
- (!((info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) &&
- (info->flags & ISDN_ASYNC_CALLOUT_NOHUP)))) {
+ if (info->flags & ISDN_ASYNC_CHECK_CD)
tty_hangup(info->tty);
- }
}
}

diff --git a/include/linux/isdn.h b/include/linux/isdn.h
index 292f27a..d13b76d 100644
--- a/include/linux/isdn.h
+++ b/include/linux/isdn.h
@@ -393,7 +393,6 @@ typedef struct isdn_net_dev_s {

#define ISDN_ASYNC_MAGIC 0x49344C01 /* for paranoia-checking */
#define ISDN_ASYNC_INITIALIZED 0x80000000 /* port was initialized */
-#define ISDN_ASYNC_CALLOUT_ACTIVE 0x40000000 /* Call out device active */
#define ISDN_ASYNC_NORMAL_ACTIVE 0x20000000 /* Normal device active */
#define ISDN_ASYNC_CLOSING 0x08000000 /* Serial port is closing */
#define ISDN_ASYNC_CTS_FLOW 0x04000000 /* Do CTS flow control */
@@ -498,8 +497,6 @@ typedef struct modem_info {
#endif
struct tty_struct *tty; /* Pointer to corresponding tty */
atemu emu; /* AT-emulator data */
- struct ktermios normal_termios; /* For saving termios structs */
- struct ktermios callout_termios;
wait_queue_head_t open_wait, close_wait;
spinlock_t readlock;
} modem_info;
--
1.7.9.2



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