USB: ohci: merge ohci_finish_controller_resume with ohci_resume

Merge ohci_finish_controller_resume with ohci_resume as suggested by Alan
Stern. Since ohci_finish_controller_resume no longer exists, update the
various OHCI drivers to call ohci_resume() instead. Some drivers used to set
themselves the bit HCD_FLAG_HW_ACCESSIBLE, which is now handled by
ohci_resume().
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ohci-at91.c

@@ -705,7 +705,7 @@ static int ohci_hcd_at91_drv_resume(struct platform_device *pdev)
 	if (!clocked)
 		at91_start_clock();
 
-	ohci_finish_controller_resume(hcd);
+	ohci_resume(hcd, false);
 	return 0;
 }
 #else

drivers/usb/host/ohci-ep93xx.c

@@ -194,7 +194,7 @@ static int ohci_hcd_ep93xx_drv_resume(struct platform_device *pdev)
 
 	ep93xx_start_hc(&pdev->dev);
 
-	ohci_finish_controller_resume(hcd);
+	ohci_resume(hcd, false);
 	return 0;
 }
 #endif

drivers/usb/host/ohci-exynos.c

@@ -252,10 +252,7 @@ static int exynos_ohci_resume(struct device *dev)
 	if (pdata && pdata->phy_init)
 		pdata->phy_init(pdev, S5P_USB_PHY_HOST);
 
-	/* Mark hardware accessible again as we are out of D3 state by now */
-	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-
-	ohci_finish_controller_resume(hcd);
+	ohci_resume(hcd, false);
 
 	return 0;
 }

drivers/usb/host/ohci-hcd.c

@@ -1035,13 +1035,50 @@ static int __maybe_unused ohci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 
 static int __maybe_unused ohci_resume(struct usb_hcd *hcd, bool hibernated)
 {
+	struct ohci_hcd		*ohci = hcd_to_ohci(hcd);
+	int			port;
+	bool			need_reinit = false;
+
 	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
 
 	/* Make sure resume from hibernation re-enumerates everything */
 	if (hibernated)
-		ohci_usb_reset(hcd_to_ohci(hcd));
+		ohci_usb_reset(ohci);
+
+	/* See if the controller is already running or has been reset */
+	ohci->hc_control = ohci_readl(ohci, &ohci->regs->control);
+	if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
+		need_reinit = true;
+	} else {
+		switch (ohci->hc_control & OHCI_CTRL_HCFS) {
+		case OHCI_USB_OPER:
+		case OHCI_USB_RESET:
+			need_reinit = true;
+		}
+	}
+
+	/* If needed, reinitialize and suspend the root hub */
+	if (need_reinit) {
+		spin_lock_irq(&ohci->lock);
+		ohci_rh_resume(ohci);
+		ohci_rh_suspend(ohci, 0);
+		spin_unlock_irq(&ohci->lock);
+	}
+
+	/* Normally just turn on port power and enable interrupts */
+	else {
+		ohci_dbg(ohci, "powerup ports\n");
+		for (port = 0; port < ohci->num_ports; port++)
+			ohci_writel(ohci, RH_PS_PPS,
+					&ohci->regs->roothub.portstatus[port]);
+
+		ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrenable);
+		ohci_readl(ohci, &ohci->regs->intrenable);
+		msleep(20);
+	}
+
+	usb_hcd_resume_root_hub(hcd);
 
-	ohci_finish_controller_resume(hcd);
 	return 0;
 }
 

drivers/usb/host/ohci-hub.c

@@ -316,48 +316,6 @@ static int ohci_bus_resume (struct usb_hcd *hcd)
 	return rc;
 }
 
-/* Carry out the final steps of resuming the controller device */
-static void __maybe_unused ohci_finish_controller_resume(struct usb_hcd *hcd)
-{
-	struct ohci_hcd		*ohci = hcd_to_ohci(hcd);
-	int			port;
-	bool			need_reinit = false;
-
-	/* See if the controller is already running or has been reset */
-	ohci->hc_control = ohci_readl(ohci, &ohci->regs->control);
-	if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
-		need_reinit = true;
-	} else {
-		switch (ohci->hc_control & OHCI_CTRL_HCFS) {
-		case OHCI_USB_OPER:
-		case OHCI_USB_RESET:
-			need_reinit = true;
-		}
-	}
-
-	/* If needed, reinitialize and suspend the root hub */
-	if (need_reinit) {
-		spin_lock_irq(&ohci->lock);
-		ohci_rh_resume(ohci);
-		ohci_rh_suspend(ohci, 0);
-		spin_unlock_irq(&ohci->lock);
-	}
-
-	/* Normally just turn on port power and enable interrupts */
-	else {
-		ohci_dbg(ohci, "powerup ports\n");
-		for (port = 0; port < ohci->num_ports; port++)
-			ohci_writel(ohci, RH_PS_PPS,
-					&ohci->regs->roothub.portstatus[port]);
-
-		ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrenable);
-		ohci_readl(ohci, &ohci->regs->intrenable);
-		msleep(20);
-	}
-
-	usb_hcd_resume_root_hub(hcd);
-}
-
 /* Carry out polling-, autostop-, and autoresume-related state changes */
 static int ohci_root_hub_state_changes(struct ohci_hcd *ohci, int changed,
 		int any_connected, int rhsc_status)

drivers/usb/host/ohci-omap.c

@@ -530,7 +530,7 @@ static int ohci_omap_resume(struct platform_device *dev)
 	ohci->next_statechange = jiffies;
 
 	omap_ohci_clock_power(1);
-	ohci_finish_controller_resume(hcd);
+	ohci_resume(hcd, false);
 	return 0;
 }
 

drivers/usb/host/ohci-platform.c

@@ -203,7 +203,7 @@ static int ohci_platform_resume(struct device *dev)
 			return err;
 	}
 
-	ohci_finish_controller_resume(hcd);
+	ohci_resume(hcd, false);
 	return 0;
 }
 

drivers/usb/host/ohci-pxa27x.c

@@ -591,7 +591,7 @@ static int ohci_hcd_pxa27x_drv_resume(struct device *dev)
 	/* Select Power Management Mode */
 	pxa27x_ohci_select_pmm(ohci, inf->port_mode);
 
-	ohci_finish_controller_resume(hcd);
+	ohci_resume(hcd, false);
 	return 0;
 }
 

drivers/usb/host/ohci-s3c2410.c

@@ -524,8 +524,7 @@ static int ohci_hcd_s3c2410_drv_resume(struct device *dev)
 
 	s3c2410_start_hc(pdev, hcd);
 
-	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-	ohci_finish_controller_resume(hcd);
+	ohci_resume(hcd, false);
 
 	return 0;
 }

drivers/usb/host/ohci-spear.c

@@ -231,7 +231,7 @@ static int spear_ohci_hcd_drv_resume(struct platform_device *dev)
 	ohci->next_statechange = jiffies;
 
 	spear_start_ohci(ohci_p);
-	ohci_finish_controller_resume(hcd);
+	ohci_resume(hcd, false);
 	return 0;
 }
 #endif

drivers/usb/host/ohci-tmio.c

@@ -352,7 +352,7 @@ static int ohci_hcd_tmio_drv_resume(struct platform_device *dev)
 
 	spin_unlock_irqrestore(&tmio->lock, flags);
 
-	ohci_finish_controller_resume(hcd);
+	ohci_resume(hcd, false);
 
 	return 0;
 }