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irda-usb: suspend/resume support

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This patch adds power management suspend/resume hooks for irda-usb.

Signed-off-by: Tadashi Abe <tabe@mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tadashi Abe 2009-05-25 20:53:27 +00:00 committed by David S. Miller
parent cd39c7a571
commit e13f93188b
1 changed files with 40 additions and 0 deletions
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40
drivers/net/irda/irda-usb.c
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@ -1859,6 +1859,42 @@ static void irda_usb_disconnect(struct usb_interface *intf)
IRDA_DEBUG(0, "%s(), USB IrDA Disconnected\n", __func__);
}
#ifdef CONFIG_PM
/* USB suspend, so power off the transmitter/receiver */
static int irda_usb_suspend(struct usb_interface *intf, pm_message_t message)
{
struct irda_usb_cb *self = usb_get_intfdata(intf);
int i;
netif_device_detach(self->netdev);
if (self->tx_urb != NULL)
usb_kill_urb(self->tx_urb);
if (self->speed_urb != NULL)
usb_kill_urb(self->speed_urb);
for (i = 0; i < self->max_rx_urb; i++) {
if (self->rx_urb[i] != NULL)
usb_kill_urb(self->rx_urb[i]);
}
return 0;
}
/* Coming out of suspend, so reset hardware */
static int irda_usb_resume(struct usb_interface *intf)
{
struct irda_usb_cb *self = usb_get_intfdata(intf);
int i;
for (i = 0; i < self->max_rx_urb; i++) {
if (self->rx_urb[i] != NULL)
usb_submit_urb(self->rx_urb[i], GFP_KERNEL);
}
netif_device_attach(self->netdev);
return 0;
}
#endif
/*------------------------------------------------------------------*/
/*
* USB device callbacks
@ -1868,6 +1904,10 @@ static struct usb_driver irda_driver = {
.probe = irda_usb_probe,
.disconnect = irda_usb_disconnect,
.id_table = dongles,
#ifdef CONFIG_PM
.suspend = irda_usb_suspend,
.resume = irda_usb_resume,
#endif
};
/************************* MODULE CALLBACKS *************************/