diff options
Diffstat (limited to 'drivers/usb/gadget/dummy_hcd.c')
| -rw-r--r-- | drivers/usb/gadget/dummy_hcd.c | 91 |
1 files changed, 55 insertions, 36 deletions
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index c655d46c8aed..9734cb76dd6c 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; } |