diff options
Diffstat (limited to 'drivers/usb/gadget/ci_udc.c')
| -rw-r--r-- | drivers/usb/gadget/ci_udc.c | 44 |
1 files changed, 34 insertions, 10 deletions
diff --git a/drivers/usb/gadget/ci_udc.c b/drivers/usb/gadget/ci_udc.c index 3e8eb87..1ba5054 100644 --- a/drivers/usb/gadget/ci_udc.c +++ b/drivers/usb/gadget/ci_udc.c @@ -87,6 +87,7 @@ static int ci_ep_enable(struct usb_ep *ep, static int ci_ep_disable(struct usb_ep *ep); static int ci_ep_queue(struct usb_ep *ep, struct usb_request *req, gfp_t gfp_flags); +static int ci_ep_dequeue(struct usb_ep *ep, struct usb_request *req); static struct usb_request * ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags); static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *_req); @@ -99,6 +100,7 @@ static struct usb_ep_ops ci_ep_ops = { .enable = ci_ep_enable, .disable = ci_ep_disable, .queue = ci_ep_queue, + .dequeue = ci_ep_dequeue, .alloc_request = ci_ep_alloc_request, .free_request = ci_ep_free_request, }; @@ -424,7 +426,7 @@ static void ci_ep_submit_next_request(struct ci_ep *ci_ep) int bit, num, len, in; struct ci_req *ci_req; u8 *buf; - uint32_t length, actlen; + uint32_t len_left, len_this_dtd; struct ept_queue_item *dtd, *qtd; ci_ep->req_primed = true; @@ -442,25 +444,23 @@ static void ci_ep_submit_next_request(struct ci_ep *ci_ep) ci_req->dtd_count = 0; buf = ci_req->hw_buf; - actlen = 0; + len_left = len; dtd = item; do { - length = min(ci_req->req.length - actlen, - (unsigned)EP_MAX_LENGTH_TRANSFER); + len_this_dtd = min(len_left, (unsigned)EP_MAX_LENGTH_TRANSFER); - dtd->info = INFO_BYTES(length) | INFO_ACTIVE; + dtd->info = INFO_BYTES(len_this_dtd) | INFO_ACTIVE; dtd->page0 = (unsigned long)buf; dtd->page1 = ((unsigned long)buf & 0xfffff000) + 0x1000; dtd->page2 = ((unsigned long)buf & 0xfffff000) + 0x2000; dtd->page3 = ((unsigned long)buf & 0xfffff000) + 0x3000; dtd->page4 = ((unsigned long)buf & 0xfffff000) + 0x4000; - len -= length; - actlen += length; - buf += length; + len_left -= len_this_dtd; + buf += len_this_dtd; - if (len) { + if (len_left) { qtd = (struct ept_queue_item *) memalign(ILIST_ALIGN, ILIST_ENT_SZ); dtd->next = (unsigned long)qtd; @@ -469,7 +469,7 @@ static void ci_ep_submit_next_request(struct ci_ep *ci_ep) } ci_req->dtd_count++; - } while (len); + } while (len_left); item = dtd; /* @@ -525,6 +525,30 @@ static void ci_ep_submit_next_request(struct ci_ep *ci_ep) writel(bit, &udc->epprime); } +static int ci_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) +{ + struct ci_ep *ci_ep = container_of(_ep, struct ci_ep, ep); + struct ci_req *ci_req; + + list_for_each_entry(ci_req, &ci_ep->queue, queue) { + if (&ci_req->req == _req) + break; + } + + if (&ci_req->req != _req) + return -EINVAL; + + list_del_init(&ci_req->queue); + + if (ci_req->req.status == -EINPROGRESS) { + ci_req->req.status = -ECONNRESET; + if (ci_req->req.complete) + ci_req->req.complete(_ep, _req); + } + + return 0; +} + static int ci_ep_queue(struct usb_ep *ep, struct usb_request *req, gfp_t gfp_flags) { |