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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-04-30 00:53:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-30 08:29:40 -0700
commit6e4d376c664ded7cb9cc1c7d0cae67c9672e46b1 (patch)
tree671afcc8603e9df2f48d916ed815368761f6911f /drivers/isdn/i4l
parent9cc3c22bf017f33612748aeb466fdc3695fb1e1d (diff)
isdn_tty: Prepare for BKL push down
Three things here - Remove softcar handler - Correct termios change detection logic - Wrap break/ioctl in lock_kernel ready to drop it in the caller Signed-off-by: Alan Cox <alan@redhat.com> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/isdn/i4l')
-rw-r--r--drivers/isdn/i4l/isdn_tty.c26
1 files changed, 8 insertions, 18 deletions
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index 8af0df1d5b8..a033f53209d 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -1352,12 +1352,14 @@ isdn_tty_tiocmget(struct tty_struct *tty, struct file *file)
if (tty->flags & (1 << TTY_IO_ERROR))
return -EIO;
+ lock_kernel();
#ifdef ISDN_DEBUG_MODEM_IOCTL
printk(KERN_DEBUG "ttyI%d ioctl TIOCMGET\n", info->line);
#endif
control = info->mcr;
status = info->msr;
+ unlock_kernel();
return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0)
| ((control & UART_MCR_DTR) ? TIOCM_DTR : 0)
| ((status & UART_MSR_DCD) ? TIOCM_CAR : 0)
@@ -1381,6 +1383,7 @@ isdn_tty_tiocmset(struct tty_struct *tty, struct file *file,
printk(KERN_DEBUG "ttyI%d ioctl TIOCMxxx: %x %x\n", info->line, set, clear);
#endif
+ lock_kernel();
if (set & TIOCM_RTS)
info->mcr |= UART_MCR_RTS;
if (set & TIOCM_DTR) {
@@ -1402,6 +1405,7 @@ isdn_tty_tiocmset(struct tty_struct *tty, struct file *file,
isdn_tty_modem_hup(info, 1);
}
}
+ unlock_kernel();
return 0;
}
@@ -1435,21 +1439,6 @@ isdn_tty_ioctl(struct tty_struct *tty, struct file *file,
return retval;
tty_wait_until_sent(tty, 0);
return 0;
- case TIOCGSOFTCAR:
-#ifdef ISDN_DEBUG_MODEM_IOCTL
- printk(KERN_DEBUG "ttyI%d ioctl TIOCGSOFTCAR\n", info->line);
-#endif
- return put_user(C_CLOCAL(tty) ? 1 : 0, (ulong __user *) arg);
- case TIOCSSOFTCAR:
-#ifdef ISDN_DEBUG_MODEM_IOCTL
- printk(KERN_DEBUG "ttyI%d ioctl TIOCSSOFTCAR\n", info->line);
-#endif
- if (get_user(arg, (ulong __user *) arg))
- return -EFAULT;
- tty->termios->c_cflag =
- ((tty->termios->c_cflag & ~CLOCAL) |
- (arg ? CLOCAL : 0));
- return 0;
case TIOCSERGETLSR: /* Get line status register */
#ifdef ISDN_DEBUG_MODEM_IOCTL
printk(KERN_DEBUG "ttyI%d ioctl TIOCSERGETLSR\n", info->line);
@@ -1472,13 +1461,14 @@ isdn_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
if (!old_termios)
isdn_tty_change_speed(info);
else {
- if (tty->termios->c_cflag == old_termios->c_cflag)
+ if (tty->termios->c_cflag == old_termios->c_cflag &&
+ tty->termios->c_ispeed == old_termios->c_ispeed &&
+ tty->termios->c_ospeed == old_termios->c_ospeed)
return;
isdn_tty_change_speed(info);
if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios->c_cflag & CRTSCTS)) {
+ !(tty->termios->c_cflag & CRTSCTS))
tty->hw_stopped = 0;
- }
}
}