diff options
Diffstat (limited to 'drivers/usb/gadget/udc/mv_u3d_core.c')
| -rw-r--r-- | drivers/usb/gadget/udc/mv_u3d_core.c | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/drivers/usb/gadget/udc/mv_u3d_core.c b/drivers/usb/gadget/udc/mv_u3d_core.c index b9e19a591322..8d726bd767fd 100644 --- a/drivers/usb/gadget/udc/mv_u3d_core.c +++ b/drivers/usb/gadget/udc/mv_u3d_core.c @@ -462,6 +462,12 @@ static int mv_u3d_req_to_trb(struct mv_u3d_req *req) req->trb_head->trb_hw, trb_num * sizeof(*trb_hw), DMA_BIDIRECTIONAL); + if (dma_mapping_error(u3d->gadget.dev.parent, + req->trb_head->trb_dma)) { + kfree(req->trb_head->trb_hw); + kfree(req->trb_head); + return -EFAULT; + } req->chain = 1; } @@ -487,30 +493,32 @@ mv_u3d_start_queue(struct mv_u3d_ep *ep) ret = usb_gadget_map_request(&u3d->gadget, &req->req, mv_u3d_ep_dir(ep)); if (ret) - return ret; + goto break_processing; req->req.status = -EINPROGRESS; req->req.actual = 0; req->trb_count = 0; - /* build trbs and push them to device queue */ - if (!mv_u3d_req_to_trb(req)) { - ret = mv_u3d_queue_trb(ep, req); - if (ret) { - ep->processing = 0; - return ret; - } - } else { - ep->processing = 0; + /* build trbs */ + ret = mv_u3d_req_to_trb(req); + if (ret) { dev_err(u3d->dev, "%s, mv_u3d_req_to_trb fail\n", __func__); - return -ENOMEM; + goto break_processing; } + /* and push them to device queue */ + ret = mv_u3d_queue_trb(ep, req); + if (ret) + goto break_processing; + /* irq handler advances the queue */ - if (req) - list_add_tail(&req->queue, &ep->queue); + list_add_tail(&req->queue, &ep->queue); return 0; + +break_processing: + ep->processing = 0; + return ret; } static int mv_u3d_ep_enable(struct usb_ep *_ep, |