usb: gadget: udc-core: copy dma-related parameters from parent

gadget's device pointer now is guaranteed to
have valid dma_mask, dma_parms and coherent_dma_mask
fields since we're always copying from our
parent device.

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c
index 8a1eeb2..3e19a01 100644 (file)
--- a/drivers/usb/gadget/udc-core.c
+++ b/drivers/usb/gadget/udc-core.c
@@ -185,6 +185,10 @@ int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget)
 
        dev_set_name(&gadget->dev, "gadget");
 
+       dma_set_coherent_mask(&gadget->dev, parent->coherent_dma_mask);
+       gadget->dev.dma_parms = parent->dma_parms;
+       gadget->dev.dma_mask = parent->dma_mask;
+
        ret = device_register(&gadget->dev);
        if (ret)
                goto err2;