lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

tty: rework break handling

Browse Source 
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>
This commit is contained in:
Alan Cox
2008-07-22 11:18:03 +01:00
committed by Linus Torvalds
parent abbe629ae4
commit 9e98966c7b
20 changed files with 97 additions and 84 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/char/cyclades.c
View File

@@ -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,