diff options
Diffstat (limited to 'drivers/usb/gadget/langwell_udc.c')
| -rw-r--r-- | drivers/usb/gadget/langwell_udc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c index d297f9eb92e..06430604670 100644 --- a/drivers/usb/gadget/langwell_udc.c +++ b/drivers/usb/gadget/langwell_udc.c @@ -2440,12 +2440,14 @@ static int process_ep_req(struct langwell_udc *dev, int index, dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); for (i = 0; i < curr_req->dtd_count; i++) { - remaining_length = le16_to_cpu(curr_dtd->dtd_total); - actual -= remaining_length; /* command execution states by dTD */ dtd_status = curr_dtd->dtd_status; + barrier(); + remaining_length = le16_to_cpu(curr_dtd->dtd_total); + actual -= remaining_length; + if (!dtd_status) { /* transfers completed successfully */ if (!remaining_length) { |