Auto-update from upstream

1 files changed, 55 insertions, 36 deletions

diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index c655d46c8ae..9734cb76dd6 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -138,7 +138,7 @@ static const char *const ep_name [] = {
 	/* or like sa1100: two fixed function endpoints */
 	"ep1out-bulk", "ep2in-bulk",
 };
-#define DUMMY_ENDPOINTS	(sizeof(ep_name)/sizeof(char *))
+#define DUMMY_ENDPOINTS	ARRAY_SIZE(ep_name)
 
 /*-------------------------------------------------------------------------*/
 
@@ -896,7 +896,7 @@ dummy_gadget_release (struct device *dev)
 #endif
 }
 
-static int dummy_udc_probe (struct platform_device *dev)
+static int dummy_udc_probe (struct platform_device *pdev)
 {
 	struct dummy	*dum = the_controller;
 	int		rc;
@@ -909,7 +909,7 @@ static int dummy_udc_probe (struct platform_device *dev)
 	dum->gadget.is_otg = (dummy_to_hcd(dum)->self.otg_port != 0);
 
 	strcpy (dum->gadget.dev.bus_id, "gadget");
-	dum->gadget.dev.parent = &dev->dev;
+	dum->gadget.dev.parent = &pdev->dev;
 	dum->gadget.dev.release = dummy_gadget_release;
 	rc = device_register (&dum->gadget.dev);
 	if (rc < 0)
@@ -919,47 +919,47 @@ static int dummy_udc_probe (struct platform_device *dev)
 	usb_bus_get (&dummy_to_hcd (dum)->self);
 #endif
 
-	platform_set_drvdata (dev, dum);
+	platform_set_drvdata (pdev, dum);
 	device_create_file (&dum->gadget.dev, &dev_attr_function);
 	return rc;
 }
 
-static int dummy_udc_remove (struct platform_device *dev)
+static int dummy_udc_remove (struct platform_device *pdev)
 {
-	struct dummy	*dum = platform_get_drvdata (dev);
+	struct dummy	*dum = platform_get_drvdata (pdev);
 
-	platform_set_drvdata (dev, NULL);
+	platform_set_drvdata (pdev, NULL);
 	device_remove_file (&dum->gadget.dev, &dev_attr_function);
 	device_unregister (&dum->gadget.dev);
 	return 0;
 }
 
-static int dummy_udc_suspend (struct platform_device *dev, pm_message_t state)
+static int dummy_udc_suspend (struct platform_device *pdev, pm_message_t state)
 {
-	struct dummy	*dum = platform_get_drvdata(dev);
+	struct dummy	*dum = platform_get_drvdata(pdev);
 
-	dev_dbg (&dev->dev, "%s\n", __FUNCTION__);
+	dev_dbg (&pdev->dev, "%s\n", __FUNCTION__);
 	spin_lock_irq (&dum->lock);
 	dum->udc_suspended = 1;
 	set_link_state (dum);
 	spin_unlock_irq (&dum->lock);
 
-	dev->dev.power.power_state = state;
+	pdev->dev.power.power_state = state;
 	usb_hcd_poll_rh_status (dummy_to_hcd (dum));
 	return 0;
 }
 
-static int dummy_udc_resume (struct platform_device *dev)
+static int dummy_udc_resume (struct platform_device *pdev)
 {
-	struct dummy	*dum = platform_get_drvdata(dev);
+	struct dummy	*dum = platform_get_drvdata(pdev);
 
-	dev_dbg (&dev->dev, "%s\n", __FUNCTION__);
+	dev_dbg (&pdev->dev, "%s\n", __FUNCTION__);
 	spin_lock_irq (&dum->lock);
 	dum->udc_suspended = 0;
 	set_link_state (dum);
 	spin_unlock_irq (&dum->lock);
 
-	dev->dev.power.power_state = PMSG_ON;
+	pdev->dev.power.power_state = PMSG_ON;
 	usb_hcd_poll_rh_status (dummy_to_hcd (dum));
 	return 0;
 }
@@ -1576,7 +1576,7 @@ static int dummy_hub_status (struct usb_hcd *hcd, char *buf)
 	dum = hcd_to_dummy (hcd);
 
 	spin_lock_irqsave (&dum->lock, flags);
-	if (hcd->state != HC_STATE_RUNNING)
+	if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))
 		goto done;
 
 	if (dum->resuming && time_after_eq (jiffies, dum->re_timeout)) {
@@ -1623,7 +1623,7 @@ static int dummy_hub_control (
 	int		retval = 0;
 	unsigned long	flags;
 
-	if (hcd->state != HC_STATE_RUNNING)
+	if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))
 		return -ETIMEDOUT;
 
 	dum = hcd_to_dummy (hcd);
@@ -1756,9 +1756,12 @@ static int dummy_bus_suspend (struct usb_hcd *hcd)
 {
 	struct dummy *dum = hcd_to_dummy (hcd);
 
+	dev_dbg (&hcd->self.root_hub->dev, "%s\n", __FUNCTION__);
+
 	spin_lock_irq (&dum->lock);
 	dum->rh_state = DUMMY_RH_SUSPENDED;
 	set_link_state (dum);
+	hcd->state = HC_STATE_SUSPENDED;
 	spin_unlock_irq (&dum->lock);
 	return 0;
 }
@@ -1766,14 +1769,23 @@ static int dummy_bus_suspend (struct usb_hcd *hcd)
 static int dummy_bus_resume (struct usb_hcd *hcd)
 {
 	struct dummy *dum = hcd_to_dummy (hcd);
+	int rc = 0;
+
+	dev_dbg (&hcd->self.root_hub->dev, "%s\n", __FUNCTION__);
 
 	spin_lock_irq (&dum->lock);
-	dum->rh_state = DUMMY_RH_RUNNING;
-	set_link_state (dum);
-	if (!list_empty(&dum->urbp_list))
-		mod_timer (&dum->timer, jiffies);
+	if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
+		dev_warn (&hcd->self.root_hub->dev, "HC isn't running!\n");
+		rc = -ENODEV;
+	} else {
+		dum->rh_state = DUMMY_RH_RUNNING;
+		set_link_state (dum);
+		if (!list_empty(&dum->urbp_list))
+			mod_timer (&dum->timer, jiffies);
+		hcd->state = HC_STATE_RUNNING;
+	}
 	spin_unlock_irq (&dum->lock);
-	return 0;
+	return rc;
 }
 
 /*-------------------------------------------------------------------------*/
@@ -1899,14 +1911,14 @@ static const struct hc_driver dummy_hcd = {
 	.bus_resume =		dummy_bus_resume,
 };
 
-static int dummy_hcd_probe (struct platform_device *dev)
+static int dummy_hcd_probe(struct platform_device *pdev)
 {
 	struct usb_hcd		*hcd;
 	int			retval;
 
-	dev_info(&dev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc);
+	dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc);
 
-	hcd = usb_create_hcd (&dummy_hcd, &dev->dev, dev->dev.bus_id);
+	hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, pdev->dev.bus_id);
 	if (!hcd)
 		return -ENOMEM;
 	the_controller = hcd_to_dummy (hcd);
@@ -1919,36 +1931,43 @@ static int dummy_hcd_probe (struct platform_device *dev)
 	return retval;
 }
 
-static int dummy_hcd_remove (struct platform_device *dev)
+static int dummy_hcd_remove (struct platform_device *pdev)
 {
 	struct usb_hcd		*hcd;
 
-	hcd = platform_get_drvdata (dev);
+	hcd = platform_get_drvdata (pdev);
 	usb_remove_hcd (hcd);
 	usb_put_hcd (hcd);
 	the_controller = NULL;
 	return 0;
 }
 
-static int dummy_hcd_suspend (struct platform_device *dev, pm_message_t state)
+static int dummy_hcd_suspend (struct platform_device *pdev, pm_message_t state)
 {
 	struct usb_hcd		*hcd;
+	struct dummy		*dum;
+	int			rc = 0;
 
-	dev_dbg (&dev->dev, "%s\n", __FUNCTION__);
-	hcd = platform_get_drvdata (dev);
+	dev_dbg (&pdev->dev, "%s\n", __FUNCTION__);
 
-	hcd->state = HC_STATE_SUSPENDED;
-	return 0;
+	hcd = platform_get_drvdata (pdev);
+	dum = hcd_to_dummy (hcd);
+	if (dum->rh_state == DUMMY_RH_RUNNING) {
+		dev_warn(&pdev->dev, "Root hub isn't suspended!\n");
+		rc = -EBUSY;
+	} else
+		clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+	return rc;
 }
 
-static int dummy_hcd_resume (struct platform_device *dev)
+static int dummy_hcd_resume (struct platform_device *pdev)
 {
 	struct usb_hcd		*hcd;
 
-	dev_dbg (&dev->dev, "%s\n", __FUNCTION__);
-	hcd = platform_get_drvdata (dev);
-	hcd->state = HC_STATE_RUNNING;
+	dev_dbg (&pdev->dev, "%s\n", __FUNCTION__);
 
+	hcd = platform_get_drvdata (pdev);
+	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
 	usb_hcd_poll_rh_status (hcd);
 	return 0;
 }