net: hso: bail out on interrupt URB allocation failure

commit 4d52ebc7ace491d58f96d1f4a1cb9070c506b2e7 upstream.

Commit 31db0dbd7244 ("net: hso: check for allocation failure in
hso_create_bulk_serial_device()") recently started returning an error
when the driver fails to allocate resources for the interrupt endpoint
and tiocmget functionality.

For consistency let's bail out from probe also if the URB allocation
fails.

Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 88f8778..fbfcbd0 100644 (file)
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2635,14 +2635,14 @@ static struct hso_device *hso_create_bulk_serial_device(
                }
 
                tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
-               if (tiocmget->urb) {
-                       mutex_init(&tiocmget->mutex);
-                       init_waitqueue_head(&tiocmget->waitq);
-               } else
-                       hso_free_tiomget(serial);
-       }
-       else
+               if (!tiocmget->urb)
+                       goto exit;
+
+               mutex_init(&tiocmget->mutex);
+               init_waitqueue_head(&tiocmget->waitq);
+       } else {
                num_urbs = 1;
+       }
 
        if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE,
                                     BULK_URB_TX_SIZE))