p54usb: fix packet loss with first generation devices

Artur Skawina confirmed that the first generation devices needs the same
URB_ZERO_PACKET flag, in oder to finish the pending transfer properly.
The second generation has been successfully fixed by
"p54usb: fix random traffic stalls (LM87)" (43af18f06d5)

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/p54/p54usb.c b/drivers/net/wireless/p54/p54usb.c
index 4487cc5..5de2ebf 100644 (file)
--- a/drivers/net/wireless/p54/p54usb.c
+++ b/drivers/net/wireless/p54/p54usb.c
@@ -229,6 +229,8 @@ static void p54u_tx_3887(struct ieee80211_hw *dev, struct sk_buff *skb)
                          usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
                          skb->data, skb->len, FREE_AFTER_TX(skb) ?
                          p54u_tx_cb : p54u_tx_dummy_cb, skb);
+       addr_urb->transfer_flags |= URB_ZERO_PACKET;
+       data_urb->transfer_flags |= URB_ZERO_PACKET;
 
        usb_anchor_urb(addr_urb, &priv->submitted);
        err = usb_submit_urb(addr_urb, GFP_ATOMIC);
@@ -237,7 +239,7 @@ static void p54u_tx_3887(struct ieee80211_hw *dev, struct sk_buff *skb)
                goto out;
        }
 
-       usb_anchor_urb(addr_urb, &priv->submitted);
+       usb_anchor_urb(data_urb, &priv->submitted);
        err = usb_submit_urb(data_urb, GFP_ATOMIC);
        if (err)
                usb_unanchor_urb(data_urb);
@@ -332,12 +334,13 @@ static void p54u_tx_net2280(struct ieee80211_hw *dev, struct sk_buff *skb)
         * free what's inside the transfer_buffer after the callback routine
         * has completed.
         */
-       int_urb->transfer_flags |= URB_FREE_BUFFER;
+       int_urb->transfer_flags |= URB_FREE_BUFFER | URB_ZERO_PACKET;
 
        usb_fill_bulk_urb(data_urb, priv->udev,
                          usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
                          hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
                          p54u_tx_cb : p54u_tx_dummy_cb, skb);
+       data_urb->transfer_flags |= URB_ZERO_PACKET;
 
        usb_anchor_urb(int_urb, &priv->submitted);
        err = usb_submit_urb(int_urb, GFP_ATOMIC);