USB: remove dev->power.power_state

power.power_state is scheduled for removal.  This patch (as1053)
removes all uses of that field from drivers/usb.  Almost all of them
were write-only, the most significant exceptions being sl811-hcd.c and
u132-hcd.c.

Part of this patch was written by Pavel Machek.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: David Brownell <david-b@pacbell.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

18 files changed, 11 insertions, 60 deletions

diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index ebccdefcc6f..2ea333a43d6 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -794,8 +794,6 @@ static int usb_suspend_device(struct usb_device *udev, pm_message_t msg)
 
  done:
 	dev_vdbg(&udev->dev, "%s: status %d\n", __FUNCTION__, status);
-	if (status == 0)
-		udev->dev.power.power_state.event = msg.event;
 	return status;
 }
 
@@ -824,10 +822,8 @@ static int usb_resume_device(struct usb_device *udev)
 
  done:
 	dev_vdbg(&udev->dev, "%s: status %d\n", __FUNCTION__, status);
-	if (status == 0) {
+	if (status == 0)
 		udev->autoresume_disabled = 0;
-		udev->dev.power.power_state.event = PM_EVENT_ON;
-	}
 	return status;
 }
 
@@ -1180,8 +1176,7 @@ static int usb_resume_both(struct usb_device *udev)
 		}
 	} else {
 
-		/* Needed for setting udev->dev.power.power_state.event,
-		 * for possible debugging message, and for reset_resume. */
+		/* Needed for reset-resume */
 		status = usb_resume_device(udev);
 	}
 
@@ -1194,7 +1189,8 @@ static int usb_resume_both(struct usb_device *udev)
 
  done:
 	dev_vdbg(&udev->dev, "%s: status %d\n", __FUNCTION__, status);
-	udev->reset_resume = 0;
+	if (!status)
+		udev->reset_resume = 0;
 	return status;
 }
 
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 84760ddbc33..739407bb849 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -73,7 +73,6 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	if (pci_enable_device(dev) < 0)
 		return -ENODEV;
 	dev->current_state = PCI_D0;
-	dev->dev.power.power_state = PMSG_ON;
 
 	if (!dev->irq) {
 		dev_err(&dev->dev,
@@ -302,8 +301,6 @@ int usb_hcd_pci_suspend(struct pci_dev *dev, pm_message_t message)
 
 done:
 	if (retval == 0) {
-		dev->dev.power.power_state = PMSG_SUSPEND;
-
 #ifdef CONFIG_PPC_PMAC
 		/* Disable ASIC clocks for USB */
 		if (machine_is(powermac)) {
@@ -406,8 +403,6 @@ int usb_hcd_pci_resume(struct pci_dev *dev)
 	pci_set_master(dev);
 	pci_restore_state(dev);
 
-	dev->dev.power.power_state = PMSG_ON;
-
 	clear_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
 
 	if (hcd->driver->resume) {
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 2375194a9d4..1bf8ccb9c58 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -114,13 +114,11 @@ static inline int is_usb_device_driver(struct device_driver *drv)
 static inline void mark_active(struct usb_interface *f)
 {
 	f->is_active = 1;
-	f->dev.power.power_state.event = PM_EVENT_ON;
 }
 
 static inline void mark_quiesced(struct usb_interface *f)
 {
 	f->is_active = 0;
-	f->dev.power.power_state.event = PM_EVENT_SUSPEND;
 }
 
 static inline int is_active(const struct usb_interface *f)
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index cbe44535c0f..e454775c2ff 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -900,7 +900,6 @@ static int dummy_udc_suspend (struct platform_device *pdev, pm_message_t state)
 	set_link_state (dum);
 	spin_unlock_irq (&dum->lock);
 
-	pdev->dev.power.power_state = state;
 	usb_hcd_poll_rh_status (dummy_to_hcd (dum));
 	return 0;
 }
@@ -915,7 +914,6 @@ static int dummy_udc_resume (struct platform_device *pdev)
 	set_link_state (dum);
 	spin_unlock_irq (&dum->lock);
 
-	pdev->dev.power.power_state = PMSG_ON;
 	usb_hcd_poll_rh_status (dummy_to_hcd (dum));
 	return 0;
 }
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index ee1e9a314cd..56277d24f04 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -1265,8 +1265,6 @@ static int can_pullup(struct omap_udc *udc)
 
 static void pullup_enable(struct omap_udc *udc)
 {
-	udc->gadget.dev.parent->power.power_state = PMSG_ON;
-	udc->gadget.dev.power.power_state = PMSG_ON;
 	UDC_SYSCON1_REG |= UDC_PULLUP_EN;
 	if (!gadget_is_otg(&udc->gadget) && !cpu_is_omap15xx())
 		OTG_CTRL_REG |= OTG_BSESSVLD;
@@ -3061,8 +3059,6 @@ static int omap_udc_suspend(struct platform_device *dev, pm_message_t message)
 		omap_pullup(&udc->gadget, 0);
 	}
 
-	udc->gadget.dev.power.power_state = PMSG_SUSPEND;
-	udc->gadget.dev.parent->power.power_state = PMSG_SUSPEND;
 	return 0;
 }
 
diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c
index 38eb92e5dc4..4af90df8e7d 100644
--- a/drivers/usb/host/ehci-dbg.c
+++ b/drivers/usb/host/ehci-dbg.c
@@ -670,7 +670,7 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
 
 	spin_lock_irqsave (&ehci->lock, flags);
 
-	if (buf->bus->controller->power.power_state.event) {
+	if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
 		size = scnprintf (next, size,
 			"bus %s, device %s (driver " DRIVER_VERSION ")\n"
 			"%s\n"
diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c
index bbda58eb881..69782221bcf 100644
--- a/drivers/usb/host/ehci-ps3.c
+++ b/drivers/usb/host/ehci-ps3.c
@@ -125,7 +125,6 @@ static int ps3_ehci_probe(struct ps3_system_bus_device *dev)
 		goto fail_irq;
 	}
 
-	dev->core.power.power_state = PMSG_ON;
 	dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
 
 	hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev->core.bus_id);
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index 203a3359a64..66d773c726f 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -1442,11 +1442,6 @@ static int isp116x_bus_resume(struct usb_hcd *hcd)
 		break;
 	case HCCONTROL_USB_OPER:
 		spin_unlock_irq(&isp116x->lock);
-		/* Without setting power_state here the
-		   SUSPENDED state won't be removed from
-		   sysfs/usbN/power.state as a response to remote
-		   wakeup. Maybe in the future. */
-		hcd->self.root_hub->dev.power.power_state = PMSG_ON;
 		return 0;
 	default:
 		/* HCCONTROL_USB_RESET: this may happen, when during
@@ -1460,7 +1455,6 @@ static int isp116x_bus_resume(struct usb_hcd *hcd)
 		if ((isp116x->rhdesca & RH_A_NDP) == 2)
 			isp116x_hub_control(hcd, SetPortFeature,
 					    USB_PORT_FEAT_POWER, 2, NULL, 0);
-		hcd->self.root_hub->dev.power.power_state = PMSG_ON;
 		return 0;
 	}
 
@@ -1486,8 +1480,6 @@ static int isp116x_bus_resume(struct usb_hcd *hcd)
 	isp116x_write_reg32(isp116x, HCCONTROL,
 			    (val & ~HCCONTROL_HCFS) | HCCONTROL_USB_OPER);
 	spin_unlock_irq(&isp116x->lock);
-	/* see analogous comment above */
-	hcd->self.root_hub->dev.power.power_state = PMSG_ON;
 	hcd->state = HC_STATE_RUNNING;
 
 	return 0;
@@ -1663,7 +1655,6 @@ static int __devinit isp116x_probe(struct platform_device *pdev)
 static int isp116x_suspend(struct platform_device *dev, pm_message_t state)
 {
 	VDBG("%s: state %x\n", __func__, state.event);
-	dev->dev.power.power_state = state;
 	return 0;
 }
 
@@ -1672,8 +1663,7 @@ static int isp116x_suspend(struct platform_device *dev, pm_message_t state)
 */
 static int isp116x_resume(struct platform_device *dev)
 {
-	VDBG("%s:  state %x\n", __func__, dev->power.power_state.event);
-	dev->dev.power.power_state = PMSG_ON;
+	VDBG("%s\n", __func__);
 	return 0;
 }
 
diff --git a/drivers/usb/host/ohci-dbg.c b/drivers/usb/host/ohci-dbg.c
index a22c30aa745..e06bfaebec5 100644
--- a/drivers/usb/host/ohci-dbg.c
+++ b/drivers/usb/host/ohci-dbg.c
@@ -655,7 +655,7 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
 		hcd->product_desc,
 		hcd_name);
 
-	if (bus->controller->power.power_state.event) {
+	if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
 		size -= scnprintf (next, size,
 			"SUSPENDED (no register access)\n");
 		goto done;
diff --git a/drivers/usb/host/ohci-ep93xx.c b/drivers/usb/host/ohci-ep93xx.c
index 156e93a9d0d..40c683f8987 100644
--- a/drivers/usb/host/ohci-ep93xx.c
+++ b/drivers/usb/host/ohci-ep93xx.c
@@ -177,7 +177,6 @@ static int ohci_hcd_ep93xx_drv_suspend(struct platform_device *pdev, pm_message_
 
 	ep93xx_stop_hc(&pdev->dev);
 	hcd->state = HC_STATE_SUSPENDED;
-	pdev->dev.power.power_state = PMSG_SUSPEND;
 
 	return 0;
 }
@@ -193,7 +192,6 @@ static int ohci_hcd_ep93xx_drv_resume(struct platform_device *pdev)
 	ohci->next_statechange = jiffies;
 
 	ep93xx_start_hc(&pdev->dev);
-	pdev->dev.power.power_state = PMSG_ON;
 	usb_hcd_resume_root_hub(hcd);
 
 	return 0;
diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index 7bfca1ed1b5..2aafa7b6c81 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -505,7 +505,6 @@ static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message)
 
 	omap_ohci_clock_power(0);
 	ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
-	dev->dev.power.power_state = PMSG_SUSPEND;
 	return 0;
 }
 
@@ -518,7 +517,6 @@ static int ohci_omap_resume(struct platform_device *dev)
 	ohci->next_statechange = jiffies;
 
 	omap_ohci_clock_power(1);
-	dev->dev.power.power_state = PMSG_ON;
 	usb_hcd_resume_root_hub(platform_get_drvdata(dev));
 	return 0;
 }
diff --git a/drivers/usb/host/ohci-ps3.c b/drivers/usb/host/ohci-ps3.c
index 01a0caeaa6b..c1935ae537f 100644
--- a/drivers/usb/host/ohci-ps3.c
+++ b/drivers/usb/host/ohci-ps3.c
@@ -127,7 +127,6 @@ static int ps3_ohci_probe(struct ps3_system_bus_device *dev)
 		goto fail_irq;
 	}
 
-	dev->core.power.power_state = PMSG_ON;
 	dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
 
 	hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev->core.bus_id);
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index 8ad9b3b604b..5d470263eed 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -339,7 +339,6 @@ static int ohci_hcd_pxa27x_drv_suspend(struct platform_device *pdev, pm_message_
 
 	pxa27x_stop_hc(&pdev->dev);
 	hcd->state = HC_STATE_SUSPENDED;
-	pdev->dev.power.power_state = PMSG_SUSPEND;
 
 	return 0;
 }
@@ -357,7 +356,6 @@ static int ohci_hcd_pxa27x_drv_resume(struct platform_device *pdev)
 	if ((status = pxa27x_start_hc(&pdev->dev)) < 0)
 		return status;
 
-	pdev->dev.power.power_state = PMSG_ON;
 	usb_hcd_resume_root_hub(hcd);
 
 	return 0;
diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c
index 8ffcd3e5f56..ab1e366d779 100644
--- a/drivers/usb/host/ohci-sm501.c
+++ b/drivers/usb/host/ohci-sm501.c
@@ -224,7 +224,6 @@ static int ohci_sm501_suspend(struct platform_device *pdev, pm_message_t msg)
 
 	sm501_unit_power(dev->parent, SM501_GATE_USB_HOST, 0);
 	ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
-	dev->power.power_state = PMSG_SUSPEND;
 	return 0;
 }
 
@@ -238,7 +237,6 @@ static int ohci_sm501_resume(struct platform_device *pdev)
 	ohci->next_statechange = jiffies;
 
 	sm501_unit_power(dev->parent, SM501_GATE_USB_HOST, 1);
-	dev->power.power_state = PMSG_ON;
 	usb_hcd_resume_root_hub(platform_get_drvdata(pdev));
 	return 0;
 }
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index afd4fbe7713..b46ff9a80b6 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -2107,13 +2107,11 @@ static struct hc_driver r8a66597_hc_driver = {
 #if defined(CONFIG_PM)
 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
 {
-	pdev->dev.power.power_state = state;
 	return 0;
 }
 
 static int r8a66597_resume(struct platform_device *pdev)
 {
-	pdev->dev.power.power_state = PMSG_ON;
 	return 0;
 }
 #else	/* if defined(CONFIG_PM) */
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 629bca0ebe8..df256d61e2c 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -94,12 +94,10 @@ static void port_power(struct sl811 *sl811, int is_on)
 
 		sl811->port1 = (1 << USB_PORT_FEAT_POWER);
 		sl811->irq_enable = SL11H_INTMASK_INSRMV;
-		hcd->self.controller->power.power_state = PMSG_ON;
 	} else {
 		sl811->port1 = 0;
 		sl811->irq_enable = 0;
 		hcd->state = HC_STATE_HALT;
-		hcd->self.controller->power.power_state = PMSG_SUSPEND;
 	}
 	sl811->ctrl1 = 0;
 	sl811_write(sl811, SL11H_IRQ_ENABLE, 0);
@@ -1772,8 +1770,6 @@ sl811h_suspend(struct platform_device *dev, pm_message_t state)
 		port_power(sl811, 0);
 		break;
 	}
-	if (retval == 0)
-		dev->dev.power.power_state = state;
 	return retval;
 }
 
@@ -1786,15 +1782,13 @@ sl811h_resume(struct platform_device *dev)
 	/* with no "check to see if VBUS is still powered" board hook,
 	 * let's assume it'd only be powered to enable remote wakeup.
 	 */
-	if (dev->dev.power.power_state.event == PM_EVENT_SUSPEND
-			|| !device_can_wakeup(&hcd->self.root_hub->dev)) {
+	if (!sl811->port1 || !device_can_wakeup(&hcd->self.root_hub->dev)) {
 		sl811->port1 = 0;
 		port_power(sl811, 1);
 		usb_root_hub_lost_power(hcd->self.root_hub);
 		return 0;
 	}
 
-	dev->dev.power.power_state = PMSG_ON;
 	return sl811h_bus_resume(hcd);
 }
 
diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c
index 8e117a795e9..6e9b7edff52 100644
--- a/drivers/usb/host/u132-hcd.c
+++ b/drivers/usb/host/u132-hcd.c
@@ -1534,11 +1534,9 @@ static void u132_power(struct u132 *u132, int is_on)
                 if (u132->power)
                         return;
                 u132->power = 1;
-                hcd->self.controller->power.power_state = PMSG_ON;
         } else {
                 u132->power = 0;
                 hcd->state = HC_STATE_HALT;
-                hcd->self.controller->power.power_state = PMSG_SUSPEND;
         }
 }
 
@@ -3227,8 +3225,6 @@ static int u132_suspend(struct platform_device *pdev, pm_message_t state)
                         }
 			break;
 		}
-                if (retval == 0)
-                        pdev->dev.power.power_state = state;
                 return retval;
         }
 }
@@ -3246,14 +3242,13 @@ static int u132_resume(struct platform_device *pdev)
                 return -ESHUTDOWN;
         } else {
                 int retval = 0;
-                if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
+		if (!u132->port[0].power) {
                         int ports = MAX_U132_PORTS;
                         while (ports-- > 0) {
                                 port_power(u132, ports, 1);
                         }
                         retval = 0;
                 } else {
-                        pdev->dev.power.power_state = PMSG_ON;
                         retval = u132_bus_resume(hcd);
                 }
                 return retval;
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index 17100471e46..2c4fd4d6df9 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -1564,7 +1564,8 @@ usbtest_ioctl (struct usb_interface *intf, unsigned int code, void *buf)
 	if (mutex_lock_interruptible(&dev->lock))
 		return -ERESTARTSYS;
 
-	if (intf->dev.power.power_state.event != PM_EVENT_ON) {
+	/* FIXME: What if a system sleep starts while a test is running? */
+	if (!intf->is_active) {
 		mutex_unlock(&dev->lock);
 		return -EHOSTUNREACH;
 	}