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>

diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c
index 9d960f1..1f47d03 100644 (file)
--- 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;