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-rw-r--r--drivers/isdn/gigaset/usb-gigaset.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c
index d81c0e3f770..7028911d91e 100644
--- a/drivers/isdn/gigaset/usb-gigaset.c
+++ b/drivers/isdn/gigaset/usb-gigaset.c
@@ -109,6 +109,11 @@ static int gigaset_probe(struct usb_interface *interface,
const struct usb_device_id *id);
static void gigaset_disconnect(struct usb_interface *interface);
+/* functions called before/after suspend */
+static int gigaset_suspend(struct usb_interface *intf, pm_message_t message);
+static int gigaset_resume(struct usb_interface *intf);
+static int gigaset_pre_reset(struct usb_interface *intf);
+
static struct gigaset_driver *driver = NULL;
static struct cardstate *cardstate = NULL;
@@ -118,6 +123,11 @@ static struct usb_driver gigaset_usb_driver = {
.probe = gigaset_probe,
.disconnect = gigaset_disconnect,
.id_table = gigaset_table,
+ .suspend = gigaset_suspend,
+ .resume = gigaset_resume,
+ .reset_resume = gigaset_resume,
+ .pre_reset = gigaset_pre_reset,
+ .post_reset = gigaset_resume,
};
struct usb_cardstate {
@@ -845,6 +855,52 @@ static void gigaset_disconnect(struct usb_interface *interface)
gigaset_unassign(cs);
}
+/* gigaset_suspend
+ * This function is called before the USB connection is suspended or reset.
+ */
+static int gigaset_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct cardstate *cs = usb_get_intfdata(intf);
+
+ /* stop activity */
+ cs->connected = 0; /* prevent rescheduling */
+ usb_kill_urb(cs->hw.usb->read_urb);
+ tasklet_kill(&cs->write_tasklet);
+ usb_kill_urb(cs->hw.usb->bulk_out_urb);
+
+ gig_dbg(DEBUG_SUSPEND, "suspend complete");
+ return 0;
+}
+
+/* gigaset_resume
+ * This function is called after the USB connection has been resumed or reset.
+ */
+static int gigaset_resume(struct usb_interface *intf)
+{
+ struct cardstate *cs = usb_get_intfdata(intf);
+ int rc;
+
+ /* resubmit interrupt URB */
+ cs->connected = 1;
+ rc = usb_submit_urb(cs->hw.usb->read_urb, GFP_KERNEL);
+ if (rc) {
+ dev_err(cs->dev, "Could not submit read URB (error %d)\n", -rc);
+ return rc;
+ }
+
+ gig_dbg(DEBUG_SUSPEND, "resume complete");
+ return 0;
+}
+
+/* gigaset_pre_reset
+ * This function is called before the USB connection is reset.
+ */
+static int gigaset_pre_reset(struct usb_interface *intf)
+{
+ /* same as suspend */
+ return gigaset_suspend(intf, PMSG_ON);
+}
+
static const struct gigaset_ops ops = {
gigaset_write_cmd,
gigaset_write_room,