diff options
| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2008-04-30 00:53:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 08:29:39 -0700 |
| commit | 341339e7aff33e3aa73d6c49dbd5a79be0bbec04 (patch) | |
| tree | 34ad63ea28e325f14530b4b68ec99fb99f5df538 /drivers/char/sx.c | |
| parent | f433c65b8acb5346e6fefff4e4b97711c987ccf9 (diff) | |
| download | linux-rt-341339e7aff33e3aa73d6c49dbd5a79be0bbec04.tar.gz | |
sx: prepare for BKL pushdown
Wrap the ioctl handler, and in this case the break handler also in the
BKL. Remove bogus softcar handlers.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/sx.c')
| -rw-r--r-- | drivers/char/sx.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/drivers/char/sx.c b/drivers/char/sx.c index a6e1c9ba1217..e97a21db3d48 100644 --- a/drivers/char/sx.c +++ b/drivers/char/sx.c @@ -1844,6 +1844,7 @@ static void sx_break(struct tty_struct *tty, int flag) int rv; func_enter(); + lock_kernel(); if (flag) rv = sx_send_command(port, HS_START, -1, HS_IDLE_BREAK); @@ -1852,7 +1853,7 @@ static void sx_break(struct tty_struct *tty, int flag) if (rv != 1) printk(KERN_ERR "sx: couldn't send break (%x).\n", read_sx_byte(port->board, CHAN_OFFSET(port, hi_hstat))); - + unlock_kernel(); func_exit(); } @@ -1888,23 +1889,12 @@ static int sx_ioctl(struct tty_struct *tty, struct file *filp, int rc; struct sx_port *port = tty->driver_data; void __user *argp = (void __user *)arg; - int ival; /* func_enter2(); */ rc = 0; + lock_kernel(); switch (cmd) { - case TIOCGSOFTCAR: - rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), - (unsigned __user *)argp); - break; - case TIOCSSOFTCAR: - if ((rc = get_user(ival, (unsigned __user *)argp)) == 0) { - tty->termios->c_cflag = - (tty->termios->c_cflag & ~CLOCAL) | - (ival ? CLOCAL : 0); - } - break; case TIOCGSERIAL: rc = gs_getserial(&port->gs, argp); break; @@ -1915,6 +1905,7 @@ static int sx_ioctl(struct tty_struct *tty, struct file *filp, rc = -ENOIOCTLCMD; break; } + unlock_kernel(); /* func_exit(); */ return rc; |