Merge tag 'fixes-for-v4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus

Felipe writes:

usb: fixes for v4.2-rc4

Only four fixes this time so I'll describe them all.

We have an iomen resource leak fix in mv_udc_core. This bug
exists since v3.3.

Renesas got a fix for how they use dma_map_single() with IOMMU.

The new ulpi bus got an ordering fix, so drivers don't try to
probe ahead of the bus.

And finally, we have a fix for a really old regression with
dwc3, one which could only be exposed by a recent patch from
Subbaraya. Basically, we were startving the controller of
transfer resources.

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

drivers/usb/common/ulpi.c

@@ -242,7 +242,7 @@ static int __init ulpi_init(void)
 {
 	return bus_register(&ulpi_bus);
 }
-module_init(ulpi_init);
+subsys_initcall(ulpi_init);
 
 static void __exit ulpi_exit(void)
 {

drivers/usb/dwc3/ep0.c

@@ -727,6 +727,10 @@ static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
 		dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_ISOCH_DELAY");
 		ret = dwc3_ep0_set_isoch_delay(dwc, ctrl);
 		break;
+	case USB_REQ_SET_INTERFACE:
+		dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_INTERFACE");
+		dwc->start_config_issued = false;
+		/* Fall through */
 	default:
 		dwc3_trace(trace_dwc3_ep0, "Forwarding to gadget driver");
 		ret = dwc3_ep0_delegate_req(dwc, ctrl);

drivers/usb/gadget/udc/mv_udc_core.c

@@ -2167,7 +2167,7 @@ static int mv_udc_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	udc->phy_regs = ioremap(r->start, resource_size(r));
+	udc->phy_regs = devm_ioremap(&pdev->dev, r->start, resource_size(r));
 	if (udc->phy_regs == NULL) {
 		dev_err(&pdev->dev, "failed to map phy I/O memory\n");
 		return -EBUSY;

drivers/usb/gadget/udc/udc-core.c

@@ -60,13 +60,15 @@ static DEFINE_MUTEX(udc_lock);
 int usb_gadget_map_request(struct usb_gadget *gadget,
 		struct usb_request *req, int is_in)
 {
+	struct device *dev = gadget->dev.parent;
+
 	if (req->length == 0)
 		return 0;
 
 	if (req->num_sgs) {
 		int     mapped;
 
-		mapped = dma_map_sg(&gadget->dev, req->sg, req->num_sgs,
+		mapped = dma_map_sg(dev, req->sg, req->num_sgs,
 				is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
 		if (mapped == 0) {
 			dev_err(&gadget->dev, "failed to map SGs\n");
@@ -75,11 +77,11 @@ int usb_gadget_map_request(struct usb_gadget *gadget,
 
 		req->num_mapped_sgs = mapped;
 	} else {
-		req->dma = dma_map_single(&gadget->dev, req->buf, req->length,
+		req->dma = dma_map_single(dev, req->buf, req->length,
 				is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
 
-		if (dma_mapping_error(&gadget->dev, req->dma)) {
-			dev_err(&gadget->dev, "failed to map buffer\n");
+		if (dma_mapping_error(dev, req->dma)) {
+			dev_err(dev, "failed to map buffer\n");
 			return -EFAULT;
 		}
 	}
@@ -95,12 +97,12 @@ void usb_gadget_unmap_request(struct usb_gadget *gadget,
 		return;
 
 	if (req->num_mapped_sgs) {
-		dma_unmap_sg(&gadget->dev, req->sg, req->num_mapped_sgs,
+		dma_unmap_sg(gadget->dev.parent, req->sg, req->num_mapped_sgs,
 				is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
 
 		req->num_mapped_sgs = 0;
 	} else {
-		dma_unmap_single(&gadget->dev, req->dma, req->length,
+		dma_unmap_single(gadget->dev.parent, req->dma, req->length,
 				is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
 	}
 }