kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

sx: prepare for BKL pushdown

Browse source 
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>
This commit is contained in:
Alan Cox 2008-04-30 00:53:24 -07:00 committed by Linus Torvalds
parent f433c65b8a
commit 341339e7af
1 changed files with 4 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
drivers/char/sx.c
View file

@ -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;