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authorTadashi Abe <tabe@mvista.com>2009-05-25 20:53:27 +0000
committerDavid S. Miller <davem@davemloft.net>2009-05-29 22:12:33 -0700
commite13f93188b8a3b418da2a02dfa1a46718cf4607b (patch)
tree30e1f936cc9a731f16c92bfaa087d824825b2de0 /drivers
parentcd39c7a5717191c677a140565bda2f1ca485ecd8 (diff)
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irda-usb: suspend/resume support
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/irda/irda-usb.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/net/irda/irda-usb.c b/drivers/net/irda/irda-usb.c
index 006ba23110d..394b2b17075 100644
--- a/drivers/net/irda/irda-usb.c
+++ b/drivers/net/irda/irda-usb.c
@@ -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 *************************/