usb: gadget: mv_udc: use DMA API for status_req's dma address

use DMA API for status_req's dma address, it is needed by dtd.

Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

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 9d960f1f7c7f..1f47d03d6871 100644
--- a/drivers/usb/gadget/mv_udc_core.c
+++ b/drivers/usb/gadget/mv_udc_core.c
@@ -1385,6 +1385,13 @@ 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);
@@ -2115,7 +2122,7 @@ 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;