From e13f93188b8a3b418da2a02dfa1a46718cf4607b Mon Sep 17 00:00:00 2001 From: Tadashi Abe Date: Mon, 25 May 2009 20:53:27 +0000 Subject: [PATCH] irda-usb: suspend/resume support This patch adds power management suspend/resume hooks for irda-usb. Signed-off-by: Tadashi Abe Signed-off-by: David S. Miller --- drivers/net/irda/irda-usb.c | 40 +++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) 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 *************************/ -- 2.46.0