diff options
| author | John W. Linville <linville@tuxdriver.com> | 2009-05-06 13:57:27 -0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-05-11 15:07:01 -0400 |
| commit | 9be6f0d40d9191e6fe7e45551c7d1c1614472b53 (patch) | |
| tree | 6964774b8c66d97723204c7f6c290a3c835a7712 /drivers/net/wireless/rtl818x/rtl8187_dev.c | |
| parent | 621ad7c96aa138cfeab53cd4debc5a4e08b2189b (diff) | |
| download | talos-op-linux-9be6f0d40d9191e6fe7e45551c7d1c1614472b53.tar.gz talos-op-linux-9be6f0d40d9191e6fe7e45551c7d1c1614472b53.zip | |
rtl8187: use DMA-aware buffers with usb_control_msg
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rtl818x/rtl8187_dev.c')
| -rw-r--r-- | drivers/net/wireless/rtl818x/rtl8187_dev.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/net/wireless/rtl818x/rtl8187_dev.c b/drivers/net/wireless/rtl818x/rtl8187_dev.c index fd81884b9c7d..bac6cfba6abd 100644 --- a/drivers/net/wireless/rtl818x/rtl8187_dev.c +++ b/drivers/net/wireless/rtl818x/rtl8187_dev.c @@ -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); } |
