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Date:	Sat, 14 May 2016 21:57:29 -0700
From:	Jeff Kirsher <>
Cc:	Jacob Keller <>,,,,,
	Jeff Kirsher <>
Subject: [net-next 07/13] i40e: change Rx hang message into a WARN_ONCE

From: Jacob Keller <>

Use WARN_ONCE in order to highlight the issue, but don't display
a warning every time. The user should be able to see the ethtool counter
we created if necessary to see how often it is occurring.

Change-ID: I40c4ea159819b64a7d33b7f5716749089791533a
Signed-off-by: Jacob Keller <>
Tested-by: Andrew Bowers <>
Signed-off-by: Jeff Kirsher <>
 drivers/net/ethernet/intel/i40e/i40e_ptp.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_ptp.c b/drivers/net/ethernet/intel/i40e/i40e_ptp.c
index a1b878a..ed39cba 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ptp.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ptp.c
@@ -289,9 +289,7 @@ void i40e_ptp_rx_hang(struct i40e_vsi *vsi)
 		rd32(hw, I40E_PRTTSYN_RXTIME_H(3));
 		pf->last_rx_ptp_check = jiffies;
-		dev_warn(&vsi->back->pdev->dev,
-			 "%s: clearing Rx timestamp hang\n",
-			 __func__);
+		WARN_ONCE(1, "Detected Rx timestamp register hang\n");

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