X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fusb%2Fusb-skeleton.c;h=be76084c8d7e6a8f8429e389c9a5149e01d1db6d;hb=3e5cce627cfaa35410ab77c50641c52b7096d3b5;hp=59973aecd96828269bf7b72d6e6575726a111ee0;hpb=758f7e161b1da3039368bf7180b9d9f4c33453da;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c
index 59973aecd96..be76084c8d7 100644
--- a/drivers/usb/usb-skeleton.c
+++ b/drivers/usb/usb-skeleton.c
@@ -88,7 +88,7 @@ static int skel_open(struct inode *inode, struct file *file)
 	interface = usb_find_interface(&skel_driver, subminor);
 	if (!interface) {
 		err ("%s - error, can't find device for minor %d",
-		     __FUNCTION__, subminor);
+		     __func__, subminor);
 		retval = -ENODEV;
 		goto exit;
 	}
@@ -125,6 +125,7 @@ static int skel_open(struct inode *inode, struct file *file)
 
 	/* save our object in the file's private structure */
 	file->private_data = dev;
+	mutex_unlock(&dev->io_mutex);
 
 exit:
 	return retval;
@@ -211,7 +212,7 @@ static void skel_write_bulk_callback(struct urb *urb)
 {
 	struct usb_skel *dev;
 
-	dev = (struct usb_skel *)urb->context;
+	dev = urb->context;
 
 	/* sync/async unlink faults aren't errors */
 	if (urb->status) {
@@ -219,7 +220,7 @@ static void skel_write_bulk_callback(struct urb *urb)
 		    urb->status == -ECONNRESET ||
 		    urb->status == -ESHUTDOWN))
 			err("%s - nonzero write bulk status received: %d",
-			    __FUNCTION__, urb->status);
+			    __func__, urb->status);
 
 		spin_lock(&dev->err_lock);
 		dev->errors = urb->status;
@@ -300,7 +301,7 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, size_t cou
 	retval = usb_submit_urb(urb, GFP_KERNEL);
 	mutex_unlock(&dev->io_mutex);
 	if (retval) {
-		err("%s - failed submitting write urb, error %d", __FUNCTION__, retval);
+		err("%s - failed submitting write urb, error %d", __func__, retval);
 		goto error_unanchor;
 	}
 
@@ -467,12 +468,35 @@ 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,
 };