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rtl8187: use DMA-aware buffers with usb_control_msg

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Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
John W. Linville
2009-05-06 13:57:27 -04:00
parent 621ad7c96a
commit 9be6f0d40d
3 changed files with 62 additions and 16 deletions
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13
drivers/net/wireless/rtl818x/rtl8187_dev.c
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@@ -1329,6 +1329,14 @@ 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;
@@ -1495,7 +1503,7 @@ 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);
@@ -1526,6 +1536,7 @@ 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);
}