[Intel-wired-lan] [PATCH] igb: bug fix Tx interrupt is not triggered
Daniel Hua
daniel.hua at ni.com
Wed Dec 27 02:17:44 UTC 2017
Signed-off-by: Daniel Hua <daniel.hua at ni.com>
---
drivers/net/ethernet/intel/igb/igb_ptp.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/net/ethernet/intel/igb/igb_ptp.c b/drivers/net/ethernet/intel/igb/igb_ptp.c
index 841c2a0..0746b19 100644
--- a/drivers/net/ethernet/intel/igb/igb_ptp.c
+++ b/drivers/net/ethernet/intel/igb/igb_ptp.c
@@ -643,6 +643,10 @@ static void igb_ptp_tx_work(struct work_struct *work)
adapter->ptp_tx_skb = NULL;
clear_bit_unlock(__IGB_PTP_TX_IN_PROGRESS, &adapter->state);
adapter->tx_hwtstamp_timeouts++;
+ /* Clear the tx valid bit in TSYNCTXCTL register to enable
+ * interrupt
+ */
+ rd32(E1000_TXSTMPH);
dev_warn(&adapter->pdev->dev, "clearing Tx timestamp hang\n");
return;
}
@@ -717,6 +721,7 @@ void igb_ptp_rx_hang(struct igb_adapter *adapter)
*/
void igb_ptp_tx_hang(struct igb_adapter *adapter)
{
+ struct e1000_hw *hw = &adapter->hw;
bool timeout = time_is_before_jiffies(adapter->ptp_tx_start +
IGB_PTP_TX_TIMEOUT);
@@ -736,6 +741,10 @@ void igb_ptp_tx_hang(struct igb_adapter *adapter)
adapter->ptp_tx_skb = NULL;
clear_bit_unlock(__IGB_PTP_TX_IN_PROGRESS, &adapter->state);
adapter->tx_hwtstamp_timeouts++;
+ /* Clear the tx valid bit in TSYNCTXCTL register to enable
+ * interrupt
+ */
+ rd32(E1000_TXSTMPH);
dev_warn(&adapter->pdev->dev, "clearing Tx timestamp hang\n");
}
}
--
1.9.1
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