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Merge branch 'stmmac-hw-tstamp-fixes' 

Jose Abreu says:

====================
net: stmmac: Fix HW timestamping

Three fixes for HW timestamping feature, all of them for RX side.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2017-10-22 02:50:40 +01:00
parent 0247880a09 9454360dec
commit 748759d57e
2 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
View File

@ -275,7 +275,7 @@ static int dwmac4_wrback_get_rx_timestamp_status(void *desc, u32 ats)
goto exit;
i++;
} while ((ret == 1) || (i < 10));
} while ((ret == 1) && (i < 10));
if (i == 10)
ret = -EBUSY;

14
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
View File

@ -473,19 +473,18 @@ static void stmmac_get_rx_hwtstamp(struct stmmac_priv *priv, struct dma_desc *p,
struct dma_desc *np, struct sk_buff *skb)
{
struct skb_shared_hwtstamps *shhwtstamp = NULL;
struct dma_desc *desc = p;
u64 ns;
if (!priv->hwts_rx_en)
return;
/* For GMAC4, the valid timestamp is from CTX next desc. */
if (priv->plat->has_gmac4)
desc = np;
/* Check if timestamp is available */
if (priv->hw->desc->get_rx_timestamp_status(p, priv->adv_ts)) {
/* For GMAC4, the valid timestamp is from CTX next desc. */
if (priv->plat->has_gmac4)
ns = priv->hw->desc->get_timestamp(np, priv->adv_ts);
else
ns = priv->hw->desc->get_timestamp(p, priv->adv_ts);
if (priv->hw->desc->get_rx_timestamp_status(desc, priv->adv_ts)) {
ns = priv->hw->desc->get_timestamp(desc, priv->adv_ts);
netdev_dbg(priv->dev, "get valid RX hw timestamp %llu\n", ns);
shhwtstamp = skb_hwtstamps(skb);
memset(shhwtstamp, 0, sizeof(struct skb_shared_hwtstamps));
@ -3333,6 +3332,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
* them in stmmac_rx_refill() function so that
* device can reuse it.
*/
dev_kfree_skb_any(rx_q->rx_skbuff[entry]);
rx_q->rx_skbuff[entry] = NULL;
dma_unmap_single(priv->device,
rx_q->rx_skbuff_dma[entry],