diff options
| author | Malcolm Priestley <tvboxspy@gmail.com> | 2015-02-09 20:11:33 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-09 08:12:40 +0100 |
| commit | c312530589ed9524fc7cc921105dc9b67ea32d6a (patch) | |
| tree | 03fcac1e57adfedccccb8114086908932c0d0508 | |
| parent | Linux 4.0-rc3 (diff) | |
| download | linux-c312530589ed9524fc7cc921105dc9b67ea32d6a.tar.xz linux-c312530589ed9524fc7cc921105dc9b67ea32d6a.zip | |
staging: vt6655: vnt_tx_packet fix dma_idx selection.
There is still a problem that dma_idx is causing packets to
go onto the wrong tx path.
Protect dma_idx fully with the present first lock and
use pTDInfo->byFlags TD_FLAGS_NETIF_SKB to set MACvTransmit.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/vt6655/device_main.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c index 4324282afe49..f5c5872b587e 100644 --- a/drivers/staging/vt6655/device_main.c +++ b/drivers/staging/vt6655/device_main.c @@ -1187,12 +1187,14 @@ static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; PSTxDesc head_td; - u32 dma_idx = TYPE_AC0DMA; + u32 dma_idx; unsigned long flags; spin_lock_irqsave(&priv->lock, flags); - if (!ieee80211_is_data(hdr->frame_control)) + if (ieee80211_is_data(hdr->frame_control)) + dma_idx = TYPE_AC0DMA; + else dma_idx = TYPE_TXDMA0; if (AVAIL_TD(priv, dma_idx) < 1) { @@ -1206,6 +1208,9 @@ static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb) head_td->pTDInfo->skb = skb; + if (dma_idx == TYPE_AC0DMA) + head_td->pTDInfo->byFlags = TD_FLAGS_NETIF_SKB; + priv->iTDUsed[dma_idx]++; /* Take ownership */ @@ -1234,13 +1239,10 @@ static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb) head_td->buff_addr = cpu_to_le32(head_td->pTDInfo->skb_dma); - if (dma_idx == TYPE_AC0DMA) { - head_td->pTDInfo->byFlags = TD_FLAGS_NETIF_SKB; - + if (head_td->pTDInfo->byFlags & TD_FLAGS_NETIF_SKB) MACvTransmitAC0(priv->PortOffset); - } else { + else MACvTransmit0(priv->PortOffset); - } spin_unlock_irqrestore(&priv->lock, flags); |