| Message ID | 1380159678-26416-13-git-send-email-troy.kisky@boundarydevices.com |
|---|---|
| State | Awaiting Upstream |
| Delegated to: | Marek Vasut |
| Headers | show |
Dear Troy Kisky, > 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> > Picking for -next, thanks Best regards, Marek Vasut
diff --git a/drivers/usb/gadget/mv_udc.c b/drivers/usb/gadget/mv_udc.c index a2cbe67..3509aa8 100644 --- a/drivers/usb/gadget/mv_udc.c +++ b/drivers/usb/gadget/mv_udc.c @@ -347,21 +347,20 @@ 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;
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> --- v4: no change v5: no change --- drivers/usb/gadget/mv_udc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)