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Commit 685eb93f authored by Alan Stern's avatar Alan Stern Committed by Greg Kroah-Hartman
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[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: default avatarAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent f1c39fad

drivers/usb/gadget/dummy_hcd.c

+10 −0
Original line number Diff line number Diff line
@@ -684,6 +684,7 @@ static int dummy_wakeup (struct usb_gadget *_gadget) 
	/* hub notices our request, issues downstream resume, etc */

	dum->resuming = 1;

	dum->re_timeout = jiffies + msecs_to_jiffies(20);

	mod_timer (&dummy_to_hcd (dum)->rh_timer, dum->re_timeout);

	return 0;

}
@@ -709,6 +710,8 @@ static int dummy_pullup (struct usb_gadget *_gadget, int value) 
	dum->pullup = (value != 0);

	set_link_state (dum);

	spin_unlock_irqrestore (&dum->lock, flags);



	usb_hcd_poll_rh_status (dummy_to_hcd (dum));

	return 0;

}
@@ -811,6 +814,8 @@ usb_gadget_register_driver (struct usb_gadget_driver *driver) 
	dum->pullup = 1;

	set_link_state (dum);

	spin_unlock_irq (&dum->lock);



	usb_hcd_poll_rh_status (dummy_to_hcd (dum));

	return 0;

}

EXPORT_SYMBOL (usb_gadget_register_driver);
@@ -845,6 +850,7 @@ usb_gadget_unregister_driver (struct usb_gadget_driver *driver) 
	set_link_state (dum);

	spin_unlock_irqrestore (&dum->lock, flags);



	usb_hcd_poll_rh_status (dummy_to_hcd (dum));

	return 0;

}

EXPORT_SYMBOL (usb_gadget_unregister_driver);
@@ -1669,6 +1675,9 @@ static int dummy_hub_control ( 
		retval = -EPIPE;

	}

	spin_unlock_irqrestore (&dum->lock, flags);



	if ((dum->port_status & PORT_C_MASK) != 0)

		usb_hcd_poll_rh_status (hcd);

	return retval;

}
@@ -1745,6 +1754,7 @@ static int dummy_start (struct usb_hcd *hcd) 
	/* only show a low-power port: just 8mA */

	hcd->power_budget = 8;

	hcd->state = HC_STATE_RUNNING;

	hcd->uses_new_polling = 1;



#ifdef CONFIG_USB_OTG

	hcd->self.otg_port = 1;