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Char: cyclades, remove sleep_on 

convert to wait_* and completion

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jiri Slaby 2007-05-08 00:36:51 -07:00 committed by Linus Torvalds
parent 875b206b5f
commit 2c7fea9921
2 changed files with 17 additions and 30 deletions
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45
drivers/char/cyclades.c
View File

@ -947,7 +947,7 @@ do_softint(struct work_struct *work)
tty_wakeup(tty);
#ifdef Z_WAKE
if (test_and_clear_bit(Cy_EVENT_SHUTDOWN_WAKEUP, &info->event))
wake_up_interruptible(&info->shutdown_wait);
complete(&info->shutdown_wait);
#endif
} /* do_softint */
@ -2324,9 +2324,8 @@ block_til_ready(struct tty_struct *tty, struct file *filp,
* until it's done, and then try again.
*/
if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) {
if (info->flags & ASYNC_CLOSING) {
interruptible_sleep_on(&info->close_wait);
}
wait_event_interruptible(info->close_wait,
!(info->flags & ASYNC_CLOSING));
return (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS;
}
@ -2597,8 +2596,8 @@ static int cy_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->flags & ASYNC_CLOSING)) {
if (info->flags & ASYNC_CLOSING)
interruptible_sleep_on(&info->close_wait);
wait_event_interruptible(info->close_wait,
!(info->flags & ASYNC_CLOSING));
return (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS;
}
@ -2805,7 +2804,7 @@ static void cy_close(struct tty_struct *tty, struct file *filp)
"ttyC%d was %x\n", info->line, retval);
}
CY_UNLOCK(info, flags);
interruptible_sleep_on(&info->shutdown_wait);
wait_for_completion_interruptible(&info->shutdown_wait);
CY_LOCK(info, flags);
}
#endif
@ -4091,32 +4090,20 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
case TIOCMIWAIT:
CY_LOCK(info, flags);
/* note the counters on entry */
cprev = info->icount;
cnow = info->icount;
CY_UNLOCK(info, flags);
while (1) {
interruptible_sleep_on(&info->delta_msr_wait);
/* see if a signal did it */
if (signal_pending(current)) {
return -ERESTARTSYS;
}
ret_val = wait_event_interruptible(info->delta_msr_wait, ({
cprev = cnow;
CY_LOCK(info, flags);
cnow = info->icount; /* atomic copy */
CY_UNLOCK(info, flags);
if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) {
return -EIO; /* no change => error */
}
if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
return 0;
}
cprev = cnow;
}
/* NOTREACHED */
((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
((arg & TIOCM_CTS) && (cnow.cts != cprev.cts));
}));
break;
/*
* Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
@ -4534,7 +4521,7 @@ static void __devinit cy_init_card(struct cyclades_card *cinfo)
INIT_WORK(&info->tqueue, do_softint);
init_waitqueue_head(&info->open_wait);
init_waitqueue_head(&info->close_wait);
init_waitqueue_head(&info->shutdown_wait);
init_completion(&info->shutdown_wait);
init_waitqueue_head(&info->delta_msr_wait);
if (IS_CYC_Z(*cinfo)) {

2
include/linux/cyclades.h
View File

@ -588,7 +588,7 @@ struct cyclades_port {
struct work_struct tqueue;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
wait_queue_head_t shutdown_wait;
struct completion shutdown_wait;
wait_queue_head_t delta_msr_wait;
int throttle;
};