USB: host: use platform_{get,set}_drvdata()

Use the wrapper functions for getting and setting the driver data using
platform_device instead of using dev_{get,set}_drvdata() with &pdev->dev,
so we can directly pass a struct platform_device.

Also, unnecessary dev_set_drvdata() is removed, because the driver core
clears the driver data to NULL after device_release or on probe failure.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Acked-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ehci-grlib.c

@@ -153,9 +153,7 @@ static int ehci_hcd_grlib_probe(struct platform_device *op)
 
 static int ehci_hcd_grlib_remove(struct platform_device *op)
 {
-	struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
-
-	dev_set_drvdata(&op->dev, NULL);
+	struct usb_hcd *hcd = platform_get_drvdata(op);
 
 	dev_dbg(&op->dev, "stopping GRLIB GRUSBHC EHCI USB Controller\n");
 
@@ -171,7 +169,7 @@ static int ehci_hcd_grlib_remove(struct platform_device *op)
 
 static void ehci_hcd_grlib_shutdown(struct platform_device *op)
 {
-	struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
+	struct usb_hcd *hcd = platform_get_drvdata(op);
 
 	if (hcd->driver->shutdown)
 		hcd->driver->shutdown(hcd);

drivers/usb/host/ehci-ppc-of.c

@@ -180,14 +180,12 @@ static int ehci_hcd_ppc_of_probe(struct platform_device *op)
 
 static int ehci_hcd_ppc_of_remove(struct platform_device *op)
 {
-	struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
+	struct usb_hcd *hcd = platform_get_drvdata(op);
 	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 
 	struct device_node *np;
 	struct resource res;
 
-	dev_set_drvdata(&op->dev, NULL);
-
 	dev_dbg(&op->dev, "stopping PPC-OF USB Controller\n");
 
 	usb_remove_hcd(hcd);
@@ -219,7 +217,7 @@ static int ehci_hcd_ppc_of_remove(struct platform_device *op)
 
 static void ehci_hcd_ppc_of_shutdown(struct platform_device *op)
 {
-	struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
+	struct usb_hcd *hcd = platform_get_drvdata(op);
 
 	if (hcd->driver->shutdown)
 		hcd->driver->shutdown(hcd);

drivers/usb/host/ehci-xilinx-of.c

@@ -209,8 +209,7 @@ static int ehci_hcd_xilinx_of_probe(struct platform_device *op)
  */
 static int ehci_hcd_xilinx_of_remove(struct platform_device *op)
 {
-	struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
-	dev_set_drvdata(&op->dev, NULL);
+	struct usb_hcd *hcd = platform_get_drvdata(op);
 
 	dev_dbg(&op->dev, "stopping XILINX-OF USB Controller\n");
 
@@ -229,7 +228,7 @@ static int ehci_hcd_xilinx_of_remove(struct platform_device *op)
  */
 static void ehci_hcd_xilinx_of_shutdown(struct platform_device *op)
 {
-	struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
+	struct usb_hcd *hcd = platform_get_drvdata(op);
 
 	if (hcd->driver->shutdown)
 		hcd->driver->shutdown(hcd);

drivers/usb/host/isp1760-if.c

@@ -118,7 +118,7 @@ static int of_isp1760_probe(struct platform_device *dev)
 		goto free_gpio;
 	}
 
-	dev_set_drvdata(&dev->dev, drvdata);
+	platform_set_drvdata(dev, drvdata);
 	return ret;
 
 free_gpio:
@@ -133,9 +133,7 @@ static int of_isp1760_probe(struct platform_device *dev)
 
 static int of_isp1760_remove(struct platform_device *dev)
 {
-	struct isp1760 *drvdata = dev_get_drvdata(&dev->dev);
-
-	dev_set_drvdata(&dev->dev, NULL);
+	struct isp1760 *drvdata = platform_get_drvdata(dev);
 
 	usb_remove_hcd(drvdata->hcd);
 	iounmap(drvdata->hcd->regs);
@@ -398,7 +396,7 @@ static int isp1760_plat_probe(struct platform_device *pdev)
 			       irqflags, -ENOENT,
 			       &pdev->dev, dev_name(&pdev->dev), devflags);
 
-	dev_set_drvdata(&pdev->dev, hcd);
+	platform_set_drvdata(pdev, hcd);
 
 	if (IS_ERR(hcd)) {
 		pr_warning("isp1760: Failed to register the HCD device\n");
@@ -419,7 +417,7 @@ static int isp1760_plat_remove(struct platform_device *pdev)
 {
 	struct resource *mem_res;
 	resource_size_t mem_size;
-	struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev);
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
 
 	usb_remove_hcd(hcd);
 

drivers/usb/host/ohci-ppc-of.c

@@ -185,8 +185,7 @@ static int ohci_hcd_ppc_of_probe(struct platform_device *op)
 
 static int ohci_hcd_ppc_of_remove(struct platform_device *op)
 {
-	struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
-	dev_set_drvdata(&op->dev, NULL);
+	struct usb_hcd *hcd = platform_get_drvdata(op);
 
 	dev_dbg(&op->dev, "stopping PPC-OF USB Controller\n");
 
@@ -203,7 +202,7 @@ static int ohci_hcd_ppc_of_remove(struct platform_device *op)
 
 static void ohci_hcd_ppc_of_shutdown(struct platform_device *op)
 {
-	struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
+	struct usb_hcd *hcd = platform_get_drvdata(op);
 
         if (hcd->driver->shutdown)
                 hcd->driver->shutdown(hcd);

drivers/usb/host/uhci-grlib.c

@@ -157,9 +157,7 @@ static int uhci_hcd_grlib_probe(struct platform_device *op)
 
 static int uhci_hcd_grlib_remove(struct platform_device *op)
 {
-	struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
-
-	dev_set_drvdata(&op->dev, NULL);
+	struct usb_hcd *hcd = platform_get_drvdata(op);
 
 	dev_dbg(&op->dev, "stopping GRLIB GRUSBHC UHCI USB Controller\n");
 
@@ -183,7 +181,7 @@ static int uhci_hcd_grlib_remove(struct platform_device *op)
  */
 static void uhci_hcd_grlib_shutdown(struct platform_device *op)
 {
-	struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
+	struct usb_hcd *hcd = platform_get_drvdata(op);
 
 	uhci_hc_died(hcd_to_uhci(hcd));
 }

drivers/usb/host/uhci-platform.c

@@ -143,7 +143,7 @@ static int uhci_hcd_platform_remove(struct platform_device *pdev)
  */
 static void uhci_hcd_platform_shutdown(struct platform_device *op)
 {
-	struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
+	struct usb_hcd *hcd = platform_get_drvdata(op);
 
 	uhci_hc_died(hcd_to_uhci(hcd));
 }

drivers/usb/host/xhci-plat.c

@@ -130,7 +130,7 @@ static int xhci_plat_probe(struct platform_device *pdev)
 		goto unmap_registers;
 
 	/* USB 2.0 roothub is stored in the platform_device now. */
-	hcd = dev_get_drvdata(&pdev->dev);
+	hcd = platform_get_drvdata(pdev);
 	xhci = hcd_to_xhci(hcd);
 	xhci->shared_hcd = usb_create_shared_hcd(driver, &pdev->dev,
 			dev_name(&pdev->dev), hcd);