Revert "char: moxa, prevent opening unavailable ports"

This reverts commit a90b037583d5f1ae3e54e9c687c79df82d1d34a4, which
already got fixed as commit f0e8527726b9e56649b9eafde3bc0fbc4dd2dd47:
the same patch (trivial differences) got applied twice.

Requested-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 6799588..65b6ff2 100644 (file)
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -1189,11 +1189,6 @@ static int moxa_open(struct tty_struct *tty, struct file *filp)
                return -ENODEV;
        }
 
-       if (port % MAX_PORTS_PER_BOARD >= brd->numPorts) {
-               retval = -ENODEV;
-               goto out_unlock;
-       }
-
        ch = &brd->ports[port % MAX_PORTS_PER_BOARD];
        ch->port.count++;
        tty->driver_data = ch;
@@ -1218,8 +1213,8 @@ static int moxa_open(struct tty_struct *tty, struct file *filp)
                                moxa_close_port(tty);
        } else
                ch->port.flags |= ASYNC_NORMAL_ACTIVE;
-out_unlock:
        mutex_unlock(&moxa_openlock);
+
        return retval;
 }