USB: usb-skeleton: use anchors in pre/post reset

use anchors in pre/post_reset

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c
index 59973aecd96828269bf7b72d6e6575726a111ee0..8de11deb5d1429dffb16febcd1d834623b59d0c5 100644 (file)
--- a/drivers/usb/usb-skeleton.c
+++ b/drivers/usb/usb-skeleton.c
@@ -467,12 +467,35 @@ static int skel_resume (struct usb_interface *intf)
        return 0;
 }
 
+static int skel_pre_reset(struct usb_interface *intf)
+{
+       struct usb_skel *dev = usb_get_intfdata(intf);
+
+       mutex_lock(&dev->io_mutex);
+       skel_draw_down(dev);
+
+       return 0;
+}
+
+static int skel_post_reset(struct usb_interface *intf)
+{
+       struct usb_skel *dev = usb_get_intfdata(intf);
+
+       /* we are sure no URBs are active - no locking needed */
+       dev->errors = -EPIPE;
+       mutex_unlock(&dev->io_mutex);
+
+       return 0;
+}
+
 static struct usb_driver skel_driver = {
        .name =         "skeleton",
        .probe =        skel_probe,
        .disconnect =   skel_disconnect,
        .suspend =      skel_suspend,
        .resume =       skel_resume,
+       .pre_reset =    skel_pre_reset,
+       .post_reset =   skel_post_reset,
        .id_table =     skel_table,
        .supports_autosuspend = 1,
 };