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-rw-r--r--drivers/char/serial167.c15
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index df8cd0ca97e..f62fb9360c3 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -1539,6 +1539,8 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
printk("cy_ioctl %s, cmd = %x arg = %lx\n", tty->name, cmd, arg); /* */
#endif
+ lock_kernel();
+
switch (cmd) {
case CYGETMON:
ret_val = get_mon_info(info, argp);
@@ -1584,18 +1586,6 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
break;
/* The following commands are incompletely implemented!!! */
- case TIOCGSOFTCAR:
- ret_val =
- put_user(C_CLOCAL(tty) ? 1 : 0,
- (unsigned long __user *)argp);
- break;
- case TIOCSSOFTCAR:
- ret_val = get_user(val, (unsigned long __user *)argp);
- if (ret_val)
- break;
- tty->termios->c_cflag =
- ((tty->termios->c_cflag & ~CLOCAL) | (val ? CLOCAL : 0));
- break;
case TIOCGSERIAL:
ret_val = get_serial_info(info, argp);
break;
@@ -1605,6 +1595,7 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
default:
ret_val = -ENOIOCTLCMD;
}
+ unlock_kernel();
#ifdef SERIAL_DEBUG_OTHER
printk("cy_ioctl done\n");