rtl8187: use DMA-aware buffers with usb_control_msg

[deliverable/linux.git] / drivers / net / wireless / rtl818x / rtl8187_rtl8225.c

diff --git a/drivers/net/wireless/rtl818x/rtl8187_rtl8225.c b/drivers/net/wireless/rtl818x/rtl8187_rtl8225.c
index 78df281b297a4604fd2e10e8b3bf67d3f9c1990a..a09819386a1e503d3a600c25941bfec360804668 100644 (file)
--- a/drivers/net/wireless/rtl818x/rtl8187_rtl8225.c
+++ b/drivers/net/wireless/rtl818x/rtl8187_rtl8225.c
@@ -88,9 +88,15 @@ static void rtl8225_write_8051(struct ieee80211_hw *dev, u8 addr, __le16 data)
        rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg80);
        udelay(10);
 
+       mutex_lock(&priv->io_mutex);
+
+       priv->io_dmabuf->bits16 = data;
        usb_control_msg(priv->udev, usb_sndctrlpipe(priv->udev, 0),
                        RTL8187_REQ_SET_REG, RTL8187_REQT_WRITE,
-                       addr, 0x8225, &data, sizeof(data), HZ / 2);
+                       addr, 0x8225, &priv->io_dmabuf->bits16, sizeof(data),
+                       HZ / 2);
+
+       mutex_unlock(&priv->io_mutex);
 
        rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg80 | (1 << 2));
        udelay(10);