Merge branch 'net-urb-alloc-failure'

Wolfram Sang says:

====================
net: don't print error when allocating urb fails

This per-subsystem series is part of a tree wide cleanup. usb_alloc_urb() uses
kmalloc which already prints enough information on failure. So, let's simply
remove those "allocation failed" messages from drivers like we did already for
other -ENOMEM cases. gkh acked this approach when we talked about it at LCJ in
Tokyo a few weeks ago.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/can/usb/ems_usb.c

@@ -600,7 +600,6 @@ static int ems_usb_start(struct ems_usb *dev)
 		/* create a URB, and a buffer for it */
 		urb = usb_alloc_urb(0, GFP_KERNEL);
 		if (!urb) {
-			netdev_err(netdev, "No memory left for URBs\n");
 			err = -ENOMEM;
 			break;
 		}
@@ -752,10 +751,8 @@ static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *ne
 
 	/* create a URB, and a buffer for it, and copy the data to the URB */
 	urb = usb_alloc_urb(0, GFP_ATOMIC);
-	if (!urb) {
-		netdev_err(netdev, "No memory left for URBs\n");
+	if (!urb)
 		goto nomem;
-	}
 
 	buf = usb_alloc_coherent(dev->udev, size, GFP_ATOMIC, &urb->transfer_dma);
 	if (!buf) {
@@ -1007,10 +1004,8 @@ static int ems_usb_probe(struct usb_interface *intf,
 		dev->tx_contexts[i].echo_index = MAX_TX_URBS;
 
 	dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->intr_urb) {
-		dev_err(&intf->dev, "Couldn't alloc intr URB\n");
+	if (!dev->intr_urb)
 		goto cleanup_candev;
-	}
 
 	dev->intr_in_buffer = kzalloc(INTR_IN_BUFFER_SIZE, GFP_KERNEL);
 	if (!dev->intr_in_buffer)

drivers/net/can/usb/esd_usb2.c

@@ -558,8 +558,6 @@ static int esd_usb2_setup_rx_urbs(struct esd_usb2 *dev)
 		/* create a URB, and a buffer for it */
 		urb = usb_alloc_urb(0, GFP_KERNEL);
 		if (!urb) {
-			dev_warn(dev->udev->dev.parent,
-				 "No memory left for URBs\n");
 			err = -ENOMEM;
 			break;
 		}
@@ -730,7 +728,6 @@ static netdev_tx_t esd_usb2_start_xmit(struct sk_buff *skb,
 	/* create a URB, and a buffer for it, and copy the data to the URB */
 	urb = usb_alloc_urb(0, GFP_ATOMIC);
 	if (!urb) {
-		netdev_err(netdev, "No memory left for URBs\n");
 		stats->tx_dropped++;
 		dev_kfree_skb(skb);
 		goto nourbmem;

drivers/net/can/usb/gs_usb.c

@@ -493,10 +493,8 @@ static netdev_tx_t gs_can_start_xmit(struct sk_buff *skb,
 
 	/* create a URB, and a buffer for it */
 	urb = usb_alloc_urb(0, GFP_ATOMIC);
-	if (!urb) {
-		netdev_err(netdev, "No memory left for URB\n");
+	if (!urb)
 		goto nomem_urb;
-	}
 
 	hf = usb_alloc_coherent(dev->udev, sizeof(*hf), GFP_ATOMIC,
 				&urb->transfer_dma);
@@ -600,11 +598,8 @@ static int gs_can_open(struct net_device *netdev)
 
 			/* alloc rx urb */
 			urb = usb_alloc_urb(0, GFP_KERNEL);
-			if (!urb) {
-				netdev_err(netdev,
-					   "No memory left for URB\n");
+			if (!urb)
 				return -ENOMEM;
-			}
 
 			/* alloc rx buffer */
 			buf = usb_alloc_coherent(dev->udev,

drivers/net/can/usb/kvaser_usb.c

@@ -787,10 +787,8 @@ static int kvaser_usb_simple_msg_async(struct kvaser_usb_net_priv *priv,
 	int err;
 
 	urb = usb_alloc_urb(0, GFP_ATOMIC);
-	if (!urb) {
-		netdev_err(netdev, "No memory left for URBs\n");
+	if (!urb)
 		return -ENOMEM;
-	}
 
 	buf = kmalloc(sizeof(struct kvaser_msg), GFP_ATOMIC);
 	if (!buf) {
@@ -1393,8 +1391,6 @@ static int kvaser_usb_setup_rx_urbs(struct kvaser_usb *dev)
 
 		urb = usb_alloc_urb(0, GFP_KERNEL);
 		if (!urb) {
-			dev_warn(dev->udev->dev.parent,
-				 "No memory left for URBs\n");
 			err = -ENOMEM;
 			break;
 		}
@@ -1670,7 +1666,6 @@ static netdev_tx_t kvaser_usb_start_xmit(struct sk_buff *skb,
 
 	urb = usb_alloc_urb(0, GFP_ATOMIC);
 	if (!urb) {
-		netdev_err(netdev, "No memory left for URBs\n");
 		stats->tx_dropped++;
 		dev_kfree_skb(skb);
 		return NETDEV_TX_OK;

drivers/net/can/usb/peak_usb/pcan_usb_core.c

@@ -399,7 +399,6 @@ static int peak_usb_start(struct peak_usb_device *dev)
 		/* create a URB, and a buffer for it, to receive usb messages */
 		urb = usb_alloc_urb(0, GFP_KERNEL);
 		if (!urb) {
-			netdev_err(netdev, "No memory left for URBs\n");
 			err = -ENOMEM;
 			break;
 		}
@@ -454,7 +453,6 @@ static int peak_usb_start(struct peak_usb_device *dev)
 		/* create a URB and a buffer for it, to transmit usb messages */
 		urb = usb_alloc_urb(0, GFP_KERNEL);
 		if (!urb) {
-			netdev_err(netdev, "No memory left for URBs\n");
 			err = -ENOMEM;
 			break;
 		}
@@ -651,10 +649,8 @@ static int peak_usb_restart(struct peak_usb_device *dev)
 
 	/* first allocate a urb to handle the asynchronous steps */
 	urb = usb_alloc_urb(0, GFP_ATOMIC);
-	if (!urb) {
-		netdev_err(dev->netdev, "no memory left for urb\n");
+	if (!urb)
 		return -ENOMEM;
-	}
 
 	/* also allocate enough space for the commands to send */
 	buf = kmalloc(PCAN_USB_MAX_CMD_LEN, GFP_ATOMIC);

drivers/net/can/usb/usb_8dev.c

@@ -623,10 +623,8 @@ static netdev_tx_t usb_8dev_start_xmit(struct sk_buff *skb,
 
 	/* create a URB, and a buffer for it, and copy the data to the URB */
 	urb = usb_alloc_urb(0, GFP_ATOMIC);
-	if (!urb) {
-		netdev_err(netdev, "No memory left for URBs\n");
+	if (!urb)
 		goto nomem;
-	}
 
 	buf = usb_alloc_coherent(priv->udev, size, GFP_ATOMIC,
 				 &urb->transfer_dma);
@@ -748,7 +746,6 @@ static int usb_8dev_start(struct usb_8dev_priv *priv)
 		/* create a URB, and a buffer for it */
 		urb = usb_alloc_urb(0, GFP_KERNEL);
 		if (!urb) {
-			netdev_err(netdev, "No memory left for URBs\n");
 			err = -ENOMEM;
 			break;
 		}

drivers/net/usb/hso.c

@@ -2300,10 +2300,8 @@ static int hso_serial_common_create(struct hso_serial *serial, int num_urbs,
 	serial->rx_data_length = rx_size;
 	for (i = 0; i < serial->num_rx_urbs; i++) {
 		serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
-		if (!serial->rx_urb[i]) {
-			dev_err(dev, "Could not allocate urb?\n");
+		if (!serial->rx_urb[i])
 			goto exit;
-		}
 		serial->rx_urb[i]->transfer_buffer = NULL;
 		serial->rx_urb[i]->transfer_buffer_length = 0;
 		serial->rx_data[i] = kzalloc(serial->rx_data_length,
@@ -2314,10 +2312,8 @@ static int hso_serial_common_create(struct hso_serial *serial, int num_urbs,
 
 	/* TX, allocate urb and initialize */
 	serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!serial->tx_urb) {
-		dev_err(dev, "Could not allocate urb?\n");
+	if (!serial->tx_urb)
 		goto exit;
-	}
 	serial->tx_urb->transfer_buffer = NULL;
 	serial->tx_urb->transfer_buffer_length = 0;
 	/* prepare our TX buffer */
@@ -2555,20 +2551,16 @@ static struct hso_device *hso_create_net_device(struct usb_interface *interface,
 	/* start allocating */
 	for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
 		hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL);
-		if (!hso_net->mux_bulk_rx_urb_pool[i]) {
-			dev_err(&interface->dev, "Could not allocate rx urb\n");
+		if (!hso_net->mux_bulk_rx_urb_pool[i])
 			goto exit;
-		}
 		hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE,
 							   GFP_KERNEL);
 		if (!hso_net->mux_bulk_rx_buf_pool[i])
 			goto exit;
 	}
 	hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!hso_net->mux_bulk_tx_urb) {
-		dev_err(&interface->dev, "Could not allocate tx urb\n");
+	if (!hso_net->mux_bulk_tx_urb)
 		goto exit;
-	}
 	hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL);
 	if (!hso_net->mux_bulk_tx_buf)
 		goto exit;
@@ -2787,10 +2779,8 @@ struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface)
 	}
 
 	mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!mux->shared_intr_urb) {
-		dev_err(&interface->dev, "Could not allocate intr urb?\n");
+	if (!mux->shared_intr_urb)
 		goto exit;
-	}
 	mux->shared_intr_buf =
 		kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize),
 			GFP_KERNEL);

drivers/net/usb/lan78xx.c

@@ -3002,10 +3002,8 @@ static void lan78xx_tx_bh(struct lan78xx_net *dev)
 
 gso_skb:
 	urb = usb_alloc_urb(0, GFP_ATOMIC);
-	if (!urb) {
-		netif_dbg(dev, tx_err, dev->net, "no urb\n");
+	if (!urb)
 		goto drop;
-	}
 
 	entry = (struct skb_data *)skb->cb;
 	entry->urb = urb;

drivers/net/usb/usbnet.c

@@ -2062,11 +2062,8 @@ int usbnet_write_cmd_async(struct usbnet *dev, u8 cmd, u8 reqtype,
 		   cmd, reqtype, value, index, size);
 
 	urb = usb_alloc_urb(0, GFP_ATOMIC);
-	if (!urb) {
-		netdev_err(dev->net, "Error allocating URB in"
-			   " %s!\n", __func__);
+	if (!urb)
 		goto fail;
-	}
 
 	if (data) {
 		buf = kmemdup(data, size, GFP_ATOMIC);

drivers/net/wimax/i2400m/usb-notif.c

@@ -206,7 +206,6 @@ int i2400mu_notification_setup(struct i2400mu *i2400mu)
 	i2400mu->notif_urb = usb_alloc_urb(0, GFP_KERNEL);
 	if (!i2400mu->notif_urb) {
 		ret = -ENOMEM;
-		dev_err(dev, "notification: cannot allocate URB\n");
 		goto error_alloc_urb;
 	}
 	epd = usb_get_epd(i2400mu->usb_iface,

drivers/net/wireless/ath/ar5523/ar5523.c

@@ -706,10 +706,8 @@ static int ar5523_alloc_rx_bufs(struct ar5523 *ar)
 
 		data->ar = ar;
 		data->urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!data->urb) {
-			ar5523_err(ar, "could not allocate rx data urb\n");
+		if (!data->urb)
 			goto err;
-		}
 		list_add_tail(&data->list, &ar->rx_data_free);
 		atomic_inc(&ar->rx_data_free_cnt);
 	}
@@ -824,7 +822,6 @@ static void ar5523_tx_work_locked(struct ar5523 *ar)
 
 		urb = usb_alloc_urb(0, GFP_KERNEL);
 		if (!urb) {
-			ar5523_err(ar, "Failed to allocate TX urb\n");
 			ieee80211_free_txskb(ar->hw, skb);
 			continue;
 		}
@@ -949,10 +946,8 @@ static int ar5523_alloc_tx_cmd(struct ar5523 *ar)
 	init_completion(&cmd->done);
 
 	cmd->urb_tx = usb_alloc_urb(0, GFP_KERNEL);
-	if (!cmd->urb_tx) {
-		ar5523_err(ar, "could not allocate urb\n");
+	if (!cmd->urb_tx)
 		return -ENOMEM;
-	}
 	cmd->buf_tx = usb_alloc_coherent(ar->dev, AR5523_MAX_TXCMDSZ,
 					 GFP_KERNEL,
 					 &cmd->urb_tx->transfer_dma);

drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c

@@ -1099,15 +1099,11 @@ struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo,
 	devinfo->tx_freecount = ntxq;
 
 	devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC);
-	if (!devinfo->ctl_urb) {
-		brcmf_err("usb_alloc_urb (ctl) failed\n");
+	if (!devinfo->ctl_urb)
 		goto error;
-	}
 	devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC);
-	if (!devinfo->bulk_urb) {
-		brcmf_err("usb_alloc_urb (bulk) failed\n");
+	if (!devinfo->bulk_urb)
 		goto error;
-	}
 
 	return &devinfo->bus_pub;
 

drivers/net/wireless/intersil/orinoco/orinoco_usb.c

@@ -1613,10 +1613,8 @@ static int ezusb_probe(struct usb_interface *interface,
 			}
 
 			upriv->read_urb = usb_alloc_urb(0, GFP_KERNEL);
-			if (!upriv->read_urb) {
-				err("No free urbs available");
+			if (!upriv->read_urb)
 				goto error;
-			}
 			if (le16_to_cpu(ep->wMaxPacketSize) != 64)
 				pr_warn("bulk in: wMaxPacketSize!= 64\n");
 			if (ep->bEndpointAddress != (2 | USB_DIR_IN))

drivers/net/wireless/marvell/libertas_tf/if_usb.c

@@ -198,22 +198,16 @@ static int if_usb_probe(struct usb_interface *intf,
 	}
 
 	cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!cardp->rx_urb) {
-		lbtf_deb_usbd(&udev->dev, "Rx URB allocation failed\n");
+	if (!cardp->rx_urb)
 		goto dealloc;
-	}
 
 	cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!cardp->tx_urb) {
-		lbtf_deb_usbd(&udev->dev, "Tx URB allocation failed\n");
+	if (!cardp->tx_urb)
 		goto dealloc;
-	}
 
 	cardp->cmd_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!cardp->cmd_urb) {
-		lbtf_deb_usbd(&udev->dev, "Cmd URB allocation failed\n");
+	if (!cardp->cmd_urb)
 		goto dealloc;
-	}
 
 	cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
 				    GFP_KERNEL);

drivers/net/wireless/marvell/mwifiex/usb.c

@@ -657,11 +657,8 @@ static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter)
 	card->tx_cmd.ep = card->tx_cmd_ep;
 
 	card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!card->tx_cmd.urb) {
-		mwifiex_dbg(adapter, ERROR,
-			    "tx_cmd.urb allocation failed\n");
+	if (!card->tx_cmd.urb)
 		return -ENOMEM;
-	}
 
 	for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
 		port = &card->port[i];
@@ -677,11 +674,8 @@ static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter)
 			port->tx_data_list[j].ep = port->tx_data_ep;
 			port->tx_data_list[j].urb =
 					usb_alloc_urb(0, GFP_KERNEL);
-			if (!port->tx_data_list[j].urb) {
-				mwifiex_dbg(adapter, ERROR,
-					    "urb allocation failed\n");
+			if (!port->tx_data_list[j].urb)
 				return -ENOMEM;
-			}
 		}
 	}
 
@@ -697,10 +691,8 @@ static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter)
 	card->rx_cmd.ep = card->rx_cmd_ep;
 
 	card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!card->rx_cmd.urb) {
-		mwifiex_dbg(adapter, ERROR, "rx_cmd.urb allocation failed\n");
+	if (!card->rx_cmd.urb)
 		return -ENOMEM;
-	}
 
 	card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
 	if (!card->rx_cmd.skb)
@@ -714,11 +706,8 @@ static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter)
 		card->rx_data_list[i].ep = card->rx_data_ep;
 
 		card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!card->rx_data_list[i].urb) {
-			mwifiex_dbg(adapter, ERROR,
-				    "rx_data_list[] urb allocation failed\n");
+		if (!card->rx_data_list[i].urb)
 			return -1;
-		}
 		if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
 					      MWIFIEX_RX_DATA_BUF_SIZE))
 			return -1;

drivers/net/wireless/realtek/rtlwifi/usb.c

@@ -739,11 +739,8 @@ static int _rtl_usb_receive(struct ieee80211_hw *hw)
 	for (i = 0; i < rtlusb->rx_urb_num; i++) {
 		err = -ENOMEM;
 		urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!urb) {
-			RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
-				 "Failed to alloc URB!!\n");
+		if (!urb)
 			goto err_out;
-		}
 
 		err = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
 		if (err < 0) {
@@ -907,15 +904,12 @@ static void _rtl_tx_complete(struct urb *urb)
 static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
 				struct sk_buff *skb, u32 ep_num)
 {
-	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 	struct urb *_urb;
 
 	WARN_ON(NULL == skb);
 	_urb = usb_alloc_urb(0, GFP_ATOMIC);
 	if (!_urb) {
-		RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
-			 "Can't allocate URB for bulk out!\n");
 		kfree_skb(skb);
 		return NULL;
 	}