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path: root/drivers/isdn/gigaset/usb-gigaset.c
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Diffstat (limited to 'drivers/isdn/gigaset/usb-gigaset.c')
-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 d81c0e3f7702..7028911d91ed 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,
109 const struct usb_device_id *id); 109 const struct usb_device_id *id);
110static void gigaset_disconnect(struct usb_interface *interface); 110static void gigaset_disconnect(struct usb_interface *interface);
111 111
112/* functions called before/after suspend */
113static int gigaset_suspend(struct usb_interface *intf, pm_message_t message);
114static int gigaset_resume(struct usb_interface *intf);
115static int gigaset_pre_reset(struct usb_interface *intf);
116
112static struct gigaset_driver *driver = NULL; 117static struct gigaset_driver *driver = NULL;
113static struct cardstate *cardstate = NULL; 118static struct cardstate *cardstate = NULL;
114 119
@@ -118,6 +123,11 @@ static struct usb_driver gigaset_usb_driver = {
118 .probe = gigaset_probe, 123 .probe = gigaset_probe,
119 .disconnect = gigaset_disconnect, 124 .disconnect = gigaset_disconnect,
120 .id_table = gigaset_table, 125 .id_table = gigaset_table,
126 .suspend = gigaset_suspend,
127 .resume = gigaset_resume,
128 .reset_resume = gigaset_resume,
129 .pre_reset = gigaset_pre_reset,
130 .post_reset = gigaset_resume,
121}; 131};
122 132
123struct usb_cardstate { 133struct usb_cardstate {
@@ -845,6 +855,52 @@ static void gigaset_disconnect(struct usb_interface *interface)
845 gigaset_unassign(cs); 855 gigaset_unassign(cs);
846} 856}
847 857
858/* gigaset_suspend
859 * This function is called before the USB connection is suspended or reset.
860 */
861static int gigaset_suspend(struct usb_interface *intf, pm_message_t message)
862{
863 struct cardstate *cs = usb_get_intfdata(intf);
864
865 /* stop activity */
866 cs->connected = 0; /* prevent rescheduling */
867 usb_kill_urb(cs->hw.usb->read_urb);
868 tasklet_kill(&cs->write_tasklet);
869 usb_kill_urb(cs->hw.usb->bulk_out_urb);
870
871 gig_dbg(DEBUG_SUSPEND, "suspend complete");
872 return 0;
873}
874
875/* gigaset_resume
876 * This function is called after the USB connection has been resumed or reset.
877 */
878static int gigaset_resume(struct usb_interface *intf)
879{
880 struct cardstate *cs = usb_get_intfdata(intf);
881 int rc;
882
883 /* resubmit interrupt URB */
884 cs->connected = 1;
885 rc = usb_submit_urb(cs->hw.usb->read_urb, GFP_KERNEL);
886 if (rc) {
887 dev_err(cs->dev, "Could not submit read URB (error %d)\n", -rc);
888 return rc;
889 }
890
891 gig_dbg(DEBUG_SUSPEND, "resume complete");
892 return 0;
893}
894
895/* gigaset_pre_reset
896 * This function is called before the USB connection is reset.
897 */
898static int gigaset_pre_reset(struct usb_interface *intf)
899{
900 /* same as suspend */
901 return gigaset_suspend(intf, PMSG_ON);
902}
903
848static const struct gigaset_ops ops = { 904static const struct gigaset_ops ops = {
849 gigaset_write_cmd, 905 gigaset_write_cmd,
850 gigaset_write_room, 906 gigaset_write_room,