TTY: tty_alloc_driver() returns error pointers

We changed these from alloc_tty_driver() to tty_alloc_driver() so the
error handling needs to modified to check for IS_ERR() instead of NULL.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index 3b17a044c212..56e616b9109a 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -1048,8 +1048,8 @@ static int __init moxa_init(void)
         moxaDriver = tty_alloc_driver(MAX_PORTS + 1,
                         TTY_DRIVER_REAL_RAW |
                         TTY_DRIVER_DYNAMIC_DEV);
-        if (!moxaDriver)
-                return -ENOMEM;
+        if (IS_ERR(moxaDriver))
+                return PTR_ERR(moxaDriver);
 
         moxaDriver->name = "ttyMX";
         moxaDriver->major = ttymajor;