[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>
This commit is contained in:
Alan Stern 2005-05-03 16:27:26 -04:00 committed by Greg Kroah-Hartman
parent f1c39fad7d
commit 685eb93f08

View File

@ -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;