usb/gadget: fix gadgetfs aio support.

Fix io submissions failing with ENODEV.

Signed-off-by: Mathieu Laurendeau <mat.lau@laposte.net>
Fixes: 7fe3976e0f3a ("gadget: switch ep_io_operations to ->read_iter/->write_iter")
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index 8560f2f..16104b5 100644 (file)
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -542,7 +542,7 @@ static ssize_t ep_aio(struct kiocb *iocb,
         */
        spin_lock_irq(&epdata->dev->lock);
        value = -ENODEV;
-       if (unlikely(epdata->ep))
+       if (unlikely(epdata->ep == NULL))
                goto fail;
 
        req = usb_ep_alloc_request(epdata->ep, GFP_ATOMIC);