3 files changed, 36 insertions, 17 deletions

diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 4585ee3a444a..e0fa4b186ec6 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -122,8 +122,6 @@ struct ffs_ep {
 	struct usb_endpoint_descriptor	*descs[3];
 
 	u8				num;
-
-	int				status;	/* P: epfile->mutex */
 };
 
 struct ffs_epfile {
@@ -227,6 +225,9 @@ struct ffs_io_data {
 	bool use_sg;
 
 	struct ffs_data *ffs;
+
+	int status;
+	struct completion done;
 };
 
 struct ffs_desc_helper {
@@ -707,12 +708,15 @@ static const struct file_operations ffs_ep0_operations = {
 
 static void ffs_epfile_io_complete(struct usb_ep *_ep, struct usb_request *req)
 {
+	struct ffs_io_data *io_data = req->context;
+
 	ENTER();
-	if (req->context) {
-		struct ffs_ep *ep = _ep->driver_data;
-		ep->status = req->status ? req->status : req->actual;
-		complete(req->context);
-	}
+	if (req->status)
+		io_data->status = req->status;
+	else
+		io_data->status = req->actual;
+
+	complete(&io_data->done);
 }
 
 static ssize_t ffs_copy_to_iter(void *data, int data_len, struct iov_iter *iter)
@@ -1050,7 +1054,6 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
 		WARN(1, "%s: data_len == -EINVAL\n", __func__);
 		ret = -EINVAL;
 	} else if (!io_data->aio) {
-		DECLARE_COMPLETION_ONSTACK(done);
 		bool interrupted = false;
 
 		req = ep->req;
@@ -1066,7 +1069,8 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
 
 		io_data->buf = data;
 
-		req->context  = &done;
+		init_completion(&io_data->done);
+		req->context  = io_data;
 		req->complete = ffs_epfile_io_complete;
 
 		ret = usb_ep_queue(ep->ep, req, GFP_ATOMIC);
@@ -1075,7 +1079,12 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
 
 		spin_unlock_irq(&epfile->ffs->eps_lock);
 
-		if (wait_for_completion_interruptible(&done)) {
+		if (wait_for_completion_interruptible(&io_data->done)) {
+			spin_lock_irq(&epfile->ffs->eps_lock);
+			if (epfile->ep != ep) {
+				ret = -ESHUTDOWN;
+				goto error_lock;
+			}
 			/*
 			 * To avoid race condition with ffs_epfile_io_complete,
 			 * dequeue the request first then check
@@ -1083,17 +1092,18 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
 			 * condition with req->complete callback.
 			 */
 			usb_ep_dequeue(ep->ep, req);
-			wait_for_completion(&done);
-			interrupted = ep->status < 0;
+			spin_unlock_irq(&epfile->ffs->eps_lock);
+			wait_for_completion(&io_data->done);
+			interrupted = io_data->status < 0;
 		}
 
 		if (interrupted)
 			ret = -EINTR;
-		else if (io_data->read && ep->status > 0)
-			ret = __ffs_epfile_read_data(epfile, data, ep->status,
+		else if (io_data->read && io_data->status > 0)
+			ret = __ffs_epfile_read_data(epfile, data, io_data->status,
 						     &io_data->data);
 		else
-			ret = ep->status;
+			ret = io_data->status;
 		goto error_mutex;
 	} else if (!(req = usb_ep_alloc_request(ep->ep, GFP_ATOMIC))) {
 		ret = -ENOMEM;
diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
index 6f5d45ef2e39..f51694f29de9 100644
--- a/drivers/usb/gadget/function/u_ether.c
+++ b/drivers/usb/gadget/function/u_ether.c
@@ -775,9 +775,13 @@ struct eth_dev *gether_setup_name(struct usb_gadget *g,
 	dev->qmult = qmult;
 	snprintf(net->name, sizeof(net->name), "%s%%d", netname);
 
-	if (get_ether_addr(dev_addr, addr))
+	if (get_ether_addr(dev_addr, addr)) {
+		net->addr_assign_type = NET_ADDR_RANDOM;
 		dev_warn(&g->dev,
 			"using random %s ethernet address\n", "self");
+	} else {
+		net->addr_assign_type = NET_ADDR_SET;
+	}
 	eth_hw_addr_set(net, addr);
 	if (get_ether_addr(host_addr, dev->host_mac))
 		dev_warn(&g->dev,
@@ -844,6 +848,10 @@ struct net_device *gether_setup_name_default(const char *netname)
 
 	eth_random_addr(dev->dev_mac);
 	pr_warn("using random %s ethernet address\n", "self");
+
+	/* by default we always have a random MAC address */
+	net->addr_assign_type = NET_ADDR_RANDOM;
+
 	eth_random_addr(dev->host_mac);
 	pr_warn("using random %s ethernet address\n", "host");
 
@@ -871,7 +879,6 @@ int gether_register_netdev(struct net_device *net)
 	dev = netdev_priv(net);
 	g = dev->gadget;
 
-	net->addr_assign_type = NET_ADDR_RANDOM;
 	eth_hw_addr_set(net, dev->dev_mac);
 
 	status = register_netdev(net);
@@ -912,6 +919,7 @@ int gether_set_dev_addr(struct net_device *net, const char *dev_addr)
 	if (get_ether_addr(dev_addr, new_addr))
 		return -EINVAL;
 	memcpy(dev->dev_mac, new_addr, ETH_ALEN);
+	net->addr_assign_type = NET_ADDR_SET;
 	return 0;
 }
 EXPORT_SYMBOL_GPL(gether_set_dev_addr);
diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c
index 6117ae8e7242..cea10cdb83ae 100644
--- a/drivers/usb/gadget/udc/lpc32xx_udc.c
+++ b/drivers/usb/gadget/udc/lpc32xx_udc.c
@@ -3016,6 +3016,7 @@ static int lpc32xx_udc_probe(struct platform_device *pdev)
 	}
 
 	udc->isp1301_i2c_client = isp1301_get_client(isp1301_node);
+	of_node_put(isp1301_node);
 	if (!udc->isp1301_i2c_client) {
 		return -EPROBE_DEFER;
 	}