target/linux/lantiq/patches/850-etop_irq.patch

   1 Index: linux-3.1.10/drivers/net/lantiq_etop.c
   2 ===================================================================
   3 --- linux-3.1.10.orig/drivers/net/lantiq_etop.c 2012-02-23 09:06:47.274557678 +0100
   4 +++ linux-3.1.10/drivers/net/lantiq_etop.c      2012-02-23 09:07:03.006558044 +0100
   5 @@ -203,8 +203,10 @@
   6  {
   7         struct ltq_etop_chan *ch = container_of(napi,
   8                                 struct ltq_etop_chan, napi);
   9 +       struct ltq_etop_priv *priv = netdev_priv(ch->netdev);
  10         int rx = 0;
  11         int complete = 0;
  12 +       unsigned long flags;
  13
  14         while ((rx < budget) && !complete) {
  15                 struct ltq_dma_desc *desc = &ch->dma.desc_base[ch->dma.desc];
  16 @@ -218,7 +220,9 @@
  17         }
  18         if (complete || !rx) {
  19                 napi_complete(&ch->napi);
  20 +               spin_lock_irqsave(&priv->lock, flags);
  21                 ltq_dma_ack_irq(&ch->dma);
  22 +               spin_unlock_irqrestore(&priv->lock, flags);
  23         }
  24         return rx;
  25  }
  26 @@ -248,7 +252,9 @@
  27         if (netif_tx_queue_stopped(txq))
  28                 netif_tx_start_queue(txq);
  29         napi_complete(&ch->napi);
  30 +       spin_lock_irqsave(&priv->lock, flags);
  31         ltq_dma_ack_irq(&ch->dma);
  32 +       spin_unlock_irqrestore(&priv->lock, flags);
  33         return 1;
  34  }
  35
  36 @@ -615,13 +621,16 @@
  37  {
  38         struct ltq_etop_priv *priv = netdev_priv(dev);
  39         int i;
  40 +       unsigned long flags;
  41
  42         for (i = 0; i < MAX_DMA_CHAN; i++) {
  43                 struct ltq_etop_chan *ch = &priv->ch[i];
  44
  45                 if (!IS_TX(i) && (!IS_RX(i)))
  46                         continue;
  47 +               spin_lock_irqsave(&priv->lock, flags);
  48                 ltq_dma_open(&ch->dma);
  49 +               spin_unlock_irqrestore(&priv->lock, flags);
  50                 napi_enable(&ch->napi);
  51         }
  52         if (priv->phydev)
  53 @@ -635,6 +644,7 @@
  54  {
  55         struct ltq_etop_priv *priv = netdev_priv(dev);
  56         int i;
  57 +       unsigned long flags;
  58
  59         netif_tx_stop_all_queues(dev);
  60         if (priv->phydev)
  61 @@ -645,7 +655,9 @@
  62                 if (!IS_RX(i) && !IS_TX(i))
  63                         continue;
  64                 napi_disable(&ch->napi);
  65 +               spin_lock_irqsave(&priv->lock, flags);
  66                 ltq_dma_close(&ch->dma);
  67 +               spin_unlock_irqrestore(&priv->lock, flags);
  68         }
  69         return 0;
  70  }