diff options
| author | Troy Kisky | 2013-09-25 18:41:12 -0700 |
|---|---|---|
| committer | Marek Vasut | 2013-10-20 23:42:39 +0200 |
| commit | 5fc2e99732367e7048f8e29592ef2d7aa7d10d14 (patch) | |
| tree | cc12dabd37aedc2d96c503eaedee6f217df7bbcd | |
| parent | 5a904430486102550f53a13f6fe63bb9657e55e1 (diff) | |
usb: gadget: mv_udc: flush item before head
Make sure the transfer descriptor is flushed
before the queue is updated so that the controller
will not see old information.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
| -rw-r--r-- | drivers/usb/gadget/mv_udc.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/usb/gadget/mv_udc.c b/drivers/usb/gadget/mv_udc.c index 0a19dcebcab..c56ccff1390 100644 --- a/drivers/usb/gadget/mv_udc.c +++ b/drivers/usb/gadget/mv_udc.c @@ -335,21 +335,20 @@ static int mv_ep_queue(struct usb_ep *ep, item->info = INFO_BYTES(len) | INFO_IOC | INFO_ACTIVE; item->page0 = (uint32_t)mv_ep->b_buf; item->page1 = ((uint32_t)mv_ep->b_buf & 0xfffff000) + 0x1000; + mv_flush_qtd(num); head->next = (unsigned) item; head->info = 0; DBG("ept%d %s queue len %x, buffer %p\n", num, in ? "in" : "out", len, mv_ep->b_buf); + mv_flush_qh(num); if (in) bit = EPT_TX(num); else bit = EPT_RX(num); - mv_flush_qh(num); - mv_flush_qtd(num); - writel(bit, &udc->epprime); return 0; |