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path: root/drivers/net/ethernet/broadcom/bcmsysport.c
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Diffstat (limited to 'drivers/net/ethernet/broadcom/bcmsysport.c')
-rw-r--r--drivers/net/ethernet/broadcom/bcmsysport.c25
1 files changed, 18 insertions, 7 deletions
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 7e8cf213fd81..744ed6ddaf37 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -710,11 +710,8 @@ static unsigned int __bcm_sysport_tx_reclaim(struct bcm_sysport_priv *priv,
unsigned int c_index, last_c_index, last_tx_cn, num_tx_cbs;
unsigned int pkts_compl = 0, bytes_compl = 0;
struct bcm_sysport_cb *cb;
- struct netdev_queue *txq;
u32 hw_ind;
- txq = netdev_get_tx_queue(ndev, ring->index);
-
/* Compute how many descriptors have been processed since last call */
hw_ind = tdma_readl(priv, TDMA_DESC_RING_PROD_CONS_INDEX(ring->index));
c_index = (hw_ind >> RING_CONS_INDEX_SHIFT) & RING_CONS_INDEX_MASK;
@@ -745,9 +742,6 @@ static unsigned int __bcm_sysport_tx_reclaim(struct bcm_sysport_priv *priv,
ring->c_index = c_index;
- if (netif_tx_queue_stopped(txq) && pkts_compl)
- netif_tx_wake_queue(txq);
-
netif_dbg(priv, tx_done, ndev,
"ring=%d c_index=%d pkts_compl=%d, bytes_compl=%d\n",
ring->index, ring->c_index, pkts_compl, bytes_compl);
@@ -759,16 +753,33 @@ static unsigned int __bcm_sysport_tx_reclaim(struct bcm_sysport_priv *priv,
static unsigned int bcm_sysport_tx_reclaim(struct bcm_sysport_priv *priv,
struct bcm_sysport_tx_ring *ring)
{
+ struct netdev_queue *txq;
unsigned int released;
unsigned long flags;
+ txq = netdev_get_tx_queue(priv->netdev, ring->index);
+
spin_lock_irqsave(&ring->lock, flags);
released = __bcm_sysport_tx_reclaim(priv, ring);
+ if (released)
+ netif_tx_wake_queue(txq);
+
spin_unlock_irqrestore(&ring->lock, flags);
return released;
}
+/* Locked version of the per-ring TX reclaim, but does not wake the queue */
+static void bcm_sysport_tx_clean(struct bcm_sysport_priv *priv,
+ struct bcm_sysport_tx_ring *ring)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ring->lock, flags);
+ __bcm_sysport_tx_reclaim(priv, ring);
+ spin_unlock_irqrestore(&ring->lock, flags);
+}
+
static int bcm_sysport_tx_poll(struct napi_struct *napi, int budget)
{
struct bcm_sysport_tx_ring *ring =
@@ -1252,7 +1263,7 @@ static void bcm_sysport_fini_tx_ring(struct bcm_sysport_priv *priv,
napi_disable(&ring->napi);
netif_napi_del(&ring->napi);
- bcm_sysport_tx_reclaim(priv, ring);
+ bcm_sysport_tx_clean(priv, ring);
kfree(ring->cbs);
ring->cbs = NULL;