usb/gadget: fix gadgetfs aio support.

commit 327b21da884fe1a29f733e41792ddd53e4a30379 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index 55386619a0f11832160594ec7a549f92e0bfcbbe..e57f48f9528f9ccce70d76f111c5153e8e45da5d 100644 (file)
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -541,7 +541,7 @@ 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);