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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-04-30 00:53:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-30 08:29:39 -0700
commit341339e7aff33e3aa73d6c49dbd5a79be0bbec04 (patch)
tree34ad63ea28e325f14530b4b68ec99fb99f5df538
parentf433c65b8acb5346e6fefff4e4b97711c987ccf9 (diff)
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>
-rw-r--r--drivers/char/sx.c17
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;