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| author | Alan Cox <alan@redhat.com> | 2008-07-22 11:18:03 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-22 13:03:28 -0700 |
| commit | 9e98966c7bb94355689478bc84cc3e0c190f977e (patch) | |
| tree | 928aebbfee524a48aa94a3d3def5249c8846a79a /drivers/char/cyclades.c | |
| parent | abbe629ae4011d2020047f41bea9f9e4b0ec4361 (diff) | |
| download | kernel-common-9e98966c7bb94355689478bc84cc3e0c190f977e.tar.gz kernel-common-9e98966c7bb94355689478bc84cc3e0c190f977e.tar.bz2 kernel-common-9e98966c7bb94355689478bc84cc3e0c190f977e.zip | |
tty: rework break handling
Some hardware needs to do break handling itself and may have partial
support only. Make break_ctl return an error code. Add a tty driver flag
so you can indicate driver hardware side break support.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/cyclades.c')
| -rw-r--r-- | drivers/char/cyclades.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c index e991dc85f2fb..fe6d774fe2e4 100644 --- a/drivers/char/cyclades.c +++ b/drivers/char/cyclades.c @@ -3700,14 +3700,15 @@ cy_tiocmset(struct tty_struct *tty, struct file *file, /* * cy_break() --- routine which turns the break handling on or off */ -static void cy_break(struct tty_struct *tty, int break_state) +static int cy_break(struct tty_struct *tty, int break_state) { struct cyclades_port *info = tty->driver_data; struct cyclades_card *card; unsigned long flags; + int retval = 0; if (serial_paranoia_check(info, tty->name, "cy_break")) - return; + return -EINVAL; card = info->card; @@ -3736,8 +3737,6 @@ static void cy_break(struct tty_struct *tty, int break_state) } } } else { - int retval; - if (break_state == -1) { retval = cyz_issue_cmd(card, info->line - card->first_line, @@ -3758,6 +3757,7 @@ static void cy_break(struct tty_struct *tty, int break_state) } } spin_unlock_irqrestore(&card->card_lock, flags); + return retval; } /* cy_break */ static int get_mon_info(struct cyclades_port *info, |