USB: EHCI: move ehci_update_device() to ehci-lpm.c

In preparation for splitting the ehci-hcd driver into a core library
and separate platform-specific driver modules, this patch (as1618)
moves ehci_update_device() from a couple of platform-specific source
files into ehci-lpm.c.  This is where it should have been all along,
since all it does is call a couple of other functions that are already
in ehci-lpm.c.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ehci-lpm.c

@@ -17,8 +17,8 @@
 */
 
 /* this file is part of ehci-hcd.c */
-static int __maybe_unused ehci_lpm_set_da(struct ehci_hcd *ehci,
-	int dev_addr, int port_num)
+
+static int ehci_lpm_set_da(struct ehci_hcd *ehci, int dev_addr, int port_num)
 {
 	u32 __iomem portsc;
 
@@ -38,7 +38,7 @@ static int __maybe_unused ehci_lpm_set_da(struct ehci_hcd *ehci,
  * this function is used to check if the device support LPM
  * if yes, mark the PORTSC register with PORT_LPM bit
  */
-static int __maybe_unused ehci_lpm_check(struct ehci_hcd *ehci, int port)
+static int ehci_lpm_check(struct ehci_hcd *ehci, int port)
 {
 	u32 __iomem	*portsc ;
 	u32 val32;
@@ -82,3 +82,20 @@ static int __maybe_unused ehci_lpm_check(struct ehci_hcd *ehci, int port)
 
 	return retval;
 }
+
+static int __maybe_unused ehci_update_device(struct usb_hcd *hcd,
+		struct usb_device *udev)
+{
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+	int rc = 0;
+
+	if (!udev->parent) /* udev is root hub itself, impossible */
+		rc = -1;
+	/* we only support lpm device connected to root hub yet */
+	if (ehci->has_lpm && !udev->parent->parent) {
+		rc = ehci_lpm_set_da(ehci, udev->devnum, udev->portnum);
+		if (!rc)
+			rc = ehci_lpm_check(ehci, udev->portnum);
+	}
+	return rc;
+}

drivers/usb/host/ehci-pci.c

@@ -379,22 +379,6 @@ static int ehci_pci_resume(struct usb_hcd *hcd, bool hibernated)
 }
 #endif
 
-static int ehci_update_device(struct usb_hcd *hcd, struct usb_device *udev)
-{
-	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-	int rc = 0;
-
-	if (!udev->parent) /* udev is root hub itself, impossible */
-		rc = -1;
-	/* we only support lpm device connected to root hub yet */
-	if (ehci->has_lpm && !udev->parent->parent) {
-		rc = ehci_lpm_set_da(ehci, udev->devnum, udev->portnum);
-		if (!rc)
-			rc = ehci_lpm_check(ehci, udev->portnum);
-	}
-	return rc;
-}
-
 static const struct hc_driver ehci_pci_hc_driver = {
 	.description =		hcd_name,
 	.product_desc =		"EHCI Host Controller",

drivers/usb/host/ehci-vt8500.c

@@ -19,22 +19,6 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 
-static int ehci_update_device(struct usb_hcd *hcd, struct usb_device *udev)
-{
-	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-	int rc = 0;
-
-	if (!udev->parent) /* udev is root hub itself, impossible */
-		rc = -1;
-	/* we only support lpm device connected to root hub yet */
-	if (ehci->has_lpm && !udev->parent->parent) {
-		rc = ehci_lpm_set_da(ehci, udev->devnum, udev->portnum);
-		if (!rc)
-			rc = ehci_lpm_check(ehci, udev->portnum);
-	}
-	return rc;
-}
-
 static const struct hc_driver vt8500_ehci_hc_driver = {
 	.description		= hcd_name,
 	.product_desc		= "VT8500 EHCI",