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>

1 files changed, 1 insertions, 6 deletions

diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 6799588b009..65b6ff2442c 100644
--- 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;
 }