From a9a4a2d9d622e3bde41356aa4e2694cee052d002 Mon Sep 17 00:00:00 2001 From: "Lendacky, Thomas" Date: Fri, 29 Aug 2014 13:16:50 -0500 Subject: amd-xgbe: Check for Tx hardware queue flushing support The flushing of the Tx hardware queues is only supported at a certain level of the hardware. Retrieve the current version of the hardware and use that to determine if flushing is supported. Signed-off-by: Tom Lendacky Signed-off-by: David S. Miller --- drivers/net/ethernet/amd/xgbe/xgbe-dev.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net/ethernet/amd/xgbe/xgbe-dev.c') diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c index edaca4496264..e43747a9926f 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c @@ -1633,6 +1633,9 @@ static int xgbe_flush_tx_queues(struct xgbe_prv_data *pdata) { unsigned int i, count; + if (XGMAC_GET_BITS(pdata->hw_feat.version, MAC_VR, SNPSVER) < 0x21) + return 0; + for (i = 0; i < pdata->tx_q_count; i++) XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, FTQ, 1); -- cgit v1.2.3