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pch_can: Fix incorrect return processing
Fix incorrect return processing. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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parent
a6f6d6b51b
commit
3332bc5446
1 changed files with 10 additions and 9 deletions
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@ -580,9 +580,11 @@ static irqreturn_t pch_can_interrupt(int irq, void *dev_id)
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struct net_device *ndev = (struct net_device *)dev_id;
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struct pch_can_priv *priv = netdev_priv(ndev);
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if (!pch_can_int_pending(priv))
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return IRQ_NONE;
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pch_can_set_int_enables(priv, PCH_CAN_NONE);
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napi_schedule(&priv->napi);
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return IRQ_HANDLED;
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}
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@ -671,8 +673,10 @@ static int pch_can_rx_normal(struct net_device *ndev, u32 obj_num, int quota)
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}
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skb = alloc_can_skb(priv->ndev, &cf);
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if (!skb)
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return -ENOMEM;
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if (!skb) {
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netdev_err(ndev, "alloc_can_skb Failed\n");
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return rcv_pkts;
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}
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/* Get Received data */
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id2 = ioread32(&priv->regs->ifregs[0].id2);
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@ -733,8 +737,8 @@ static int pch_can_poll(struct napi_struct *napi, int quota)
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struct net_device *ndev = napi->dev;
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struct pch_can_priv *priv = netdev_priv(ndev);
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u32 int_stat;
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int rcv_pkts = 0;
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u32 reg_stat;
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int quota_save = quota;
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int_stat = pch_can_int_pending(priv);
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if (!int_stat)
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@ -763,10 +767,7 @@ static int pch_can_poll(struct napi_struct *napi, int quota)
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goto end;
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if ((int_stat >= PCH_RX_OBJ_START) && (int_stat <= PCH_RX_OBJ_END)) {
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rcv_pkts += pch_can_rx_normal(ndev, int_stat, quota);
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quota -= rcv_pkts;
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if (quota < 0)
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goto end;
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quota -= pch_can_rx_normal(ndev, int_stat, quota);
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} else if ((int_stat >= PCH_TX_OBJ_START) &&
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(int_stat <= PCH_TX_OBJ_END)) {
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/* Handle transmission interrupt */
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@ -777,7 +778,7 @@ static int pch_can_poll(struct napi_struct *napi, int quota)
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napi_complete(napi);
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pch_can_set_int_enables(priv, PCH_CAN_ALL);
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return rcv_pkts;
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return quota_save - quota;
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}
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static int pch_set_bittiming(struct net_device *ndev)
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