forked from Minki/linux
[PATCH] USB dummy_hcd: Use root-hub interrupts instead of polling
This patch makes the dummy_hcd driver use emulated root-hub interrupts instead of polling. It's in the spirit of similar changes being made to the other HCDs. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -684,6 +684,7 @@ static int dummy_wakeup (struct usb_gadget *_gadget)
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/* hub notices our request, issues downstream resume, etc */
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dum->resuming = 1;
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dum->re_timeout = jiffies + msecs_to_jiffies(20);
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mod_timer (&dummy_to_hcd (dum)->rh_timer, dum->re_timeout);
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return 0;
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}
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@ -709,6 +710,8 @@ static int dummy_pullup (struct usb_gadget *_gadget, int value)
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dum->pullup = (value != 0);
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set_link_state (dum);
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spin_unlock_irqrestore (&dum->lock, flags);
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usb_hcd_poll_rh_status (dummy_to_hcd (dum));
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return 0;
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}
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@ -811,6 +814,8 @@ usb_gadget_register_driver (struct usb_gadget_driver *driver)
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dum->pullup = 1;
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set_link_state (dum);
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spin_unlock_irq (&dum->lock);
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usb_hcd_poll_rh_status (dummy_to_hcd (dum));
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return 0;
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}
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EXPORT_SYMBOL (usb_gadget_register_driver);
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@ -845,6 +850,7 @@ usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
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set_link_state (dum);
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spin_unlock_irqrestore (&dum->lock, flags);
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usb_hcd_poll_rh_status (dummy_to_hcd (dum));
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return 0;
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}
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EXPORT_SYMBOL (usb_gadget_unregister_driver);
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@ -1669,6 +1675,9 @@ static int dummy_hub_control (
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retval = -EPIPE;
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}
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spin_unlock_irqrestore (&dum->lock, flags);
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if ((dum->port_status & PORT_C_MASK) != 0)
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usb_hcd_poll_rh_status (hcd);
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return retval;
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}
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@ -1745,6 +1754,7 @@ static int dummy_start (struct usb_hcd *hcd)
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/* only show a low-power port: just 8mA */
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hcd->power_budget = 8;
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hcd->state = HC_STATE_RUNNING;
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hcd->uses_new_polling = 1;
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#ifdef CONFIG_USB_OTG
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hcd->self.otg_port = 1;
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