Am Montag 29 Oktober 2007 schrieb Tilman Schmidt:
> From: Tilman Schmidt <[email protected]>
>
> Add basic suspend/resume support to the usb_gigaset driver.
>
> Signed-off-by: Tilman Schmidt <[email protected]>
> ---
>
> drivers/isdn/gigaset/usb-gigaset.c | 69 ++++++++++++++++++++++++++++++++++++-
> 1 file changed, 68 insertions(+), 1 deletion(-)
>
> --- a/drivers/isdn/gigaset/usb-gigaset.c 2007-10-23 01:48:12.000000000 +0200
> +++ b/drivers/isdn/gigaset/usb-gigaset.c 2007-10-24 00:47:32.000000000 +0200
> @@ -104,10 +104,15 @@ MODULE_DEVICE_TABLE(usb, gigaset_table);
> * flags per packet.
> */
>
> +/* functions called if a device of this driver is connected/disconnected */
> 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 struct gigaset_driver *driver = NULL;
> static struct cardstate *cardstate = NULL;
>
> @@ -117,6 +122,11 @@ static struct usb_driver gigaset_usb_dri
> .probe = gigaset_probe,
> .disconnect = gigaset_disconnect,
> .id_table = gigaset_table,
> + .suspend = gigaset_suspend,
> + .resume = gigaset_resume,
> + .reset_resume = gigaset_resume,
> + .pre_reset = gigaset_suspend,
> + .post_reset = gigaset_resume,
> };
>
> struct usb_cardstate {
> @@ -831,7 +843,7 @@ static void gigaset_disconnect(struct us
> usb_set_intfdata(interface, NULL);
> tasklet_kill(&cs->write_tasklet);
>
> - usb_kill_urb(ucs->bulk_out_urb); /* FIXME: only if active? */
> + usb_kill_urb(ucs->bulk_out_urb);
>
> kfree(ucs->bulk_out_buffer);
> usb_free_urb(ucs->bulk_out_urb);
> @@ -847,6 +859,63 @@ static void gigaset_disconnect(struct us
> 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;
> + struct usb_cardstate *ucs;
> + int rc;
> +
> + if ((cs = usb_get_intfdata(intf)) == NULL ||
> + (ucs = cs->hw.usb) == NULL) {
> + err("%s: no cardstate", __func__);
> + return -EFAULT;
> + }
> +
> + //FIXME stop common module activities? ISDN_STAT_STOP? block open()?
> +
> + /* stop submitting bulk URBs */
> + tasklet_disable(&cs->write_tasklet);
> +
> + /* kill pending read URB */
> + usb_kill_urb(ucs->read_urb);
no pending write URB?
Regards
Oliver
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