use DMA API for status_req's dma address, it is needed by dtd.
Signed-off-by: Neil Zhang <zhangwm@xxxxxxxxxxx>
---
drivers/usb/gadget/mv_udc_core.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c
index 5fd7bb8..8b79c3b 100644
--- a/drivers/usb/gadget/mv_udc_core.c
+++ b/drivers/usb/gadget/mv_udc_core.c
@@ -1387,6 +1387,13 @@ udc_prime_status(struct mv_udc *udc, u8 direction, u16 status, bool empty)
req->req.complete = NULL;
req->dtd_count = 0;
+ if (req->req.dma == DMA_ADDR_INVALID) {
+ req->req.dma = dma_map_single(ep->udc->gadget.dev.parent,
+ req->req.buf, req->req.length,
+ ep_dir(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+ req->mapped = 1;
+ }
+
/* prime the data phase */
if (!req_to_dtd(req))
retval = queue_dtd(ep, req);
@@ -2121,7 +2128,7 @@ static int __devinit mv_udc_probe(struct platform_device *dev)
/* allocate a small amount of memory to get valid address */
udc->status_req->req.buf = kzalloc(8, GFP_KERNEL);
- udc->status_req->req.dma = virt_to_phys(udc->status_req->req.buf);
+ udc->status_req->req.dma = DMA_ADDR_INVALID;
udc->resume_state = USB_STATE_NOTATTACHED;
udc->usb_state = USB_STATE_POWERED;
--
1.7.1
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