Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / rtl818x / rtl8187_dev.c

diff --git a/drivers/net/wireless/rtl818x/rtl8187_dev.c b/drivers/net/wireless/rtl818x/rtl8187_dev.c
index 158827e50c55a2b3096ebede917c92e78affbb7c..6499ccc34c942619fc65f8ea50440c43bfb291bf 100644 (file)
--- a/drivers/net/wireless/rtl818x/rtl8187_dev.c
+++ b/drivers/net/wireless/rtl818x/rtl8187_dev.c
@@ -1326,6 +1326,14 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
        priv = dev->priv;
        priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B);
 
+       /* allocate "DMA aware" buffer for register accesses */
+       priv->io_dmabuf = kmalloc(sizeof(*priv->io_dmabuf), GFP_KERNEL);
+       if (!priv->io_dmabuf) {
+               err = -ENOMEM;
+               goto err_free_dev;
+       }
+       mutex_init(&priv->io_mutex);
+
        SET_IEEE80211_DEV(dev, &intf->dev);
        usb_set_intfdata(intf, dev);
        priv->udev = udev;
@@ -1489,7 +1497,7 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
        err = ieee80211_register_hw(dev);
        if (err) {
                printk(KERN_ERR "rtl8187: Cannot register device\n");
-               goto err_free_dev;
+               goto err_free_dmabuf;
        }
        mutex_init(&priv->conf_mutex);
        skb_queue_head_init(&priv->b_tx_status.queue);
@@ -1506,6 +1514,8 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
 
        return 0;
 
+ err_free_dmabuf:
+       kfree(priv->io_dmabuf);
  err_free_dev:
        ieee80211_free_hw(dev);
        usb_set_intfdata(intf, NULL);
@@ -1529,6 +1539,7 @@ static void __devexit rtl8187_disconnect(struct usb_interface *intf)
        priv = dev->priv;
        usb_reset_device(priv->udev);
        usb_put_dev(interface_to_usbdev(intf));
+       kfree(priv->io_dmabuf);
        ieee80211_free_hw(dev);
 }