From: Weilin Chang <weilin.chang@cavium.com>
Date: Wed, 14 Jun 2017 09:11:31 -0700
Subject: liquidio: fix VF driver off-by-one bug when setting ethtool -C ethX
 rx-frames
Patch-mainline: v4.13-rc1
Git-commit: 0430a26054733de6e7884a4d2872613f9d8b9a66
References: bsc#1067126

Signed-off-by: Weilin Chang <weilin.chang@cavium.com>
Signed-off-by: Derek Chickles <derek.chickles@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/cavium/liquidio/lio_ethtool.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c
@@ -1808,7 +1808,7 @@ oct_cfg_rx_intrcnt(struct lio *lio,
 			    (octeon_read_csr64(
 				 oct, CN23XX_VF_SLI_OQ_PKT_INT_LEVELS(q_no)) &
 			     (0x3fffff00000000UL)) |
-				rx_max_coalesced_frames);
+				(rx_max_coalesced_frames - 1));
 			/*consider writing to resend bit here*/
 		}
 		intrmod->rx_frames = rx_max_coalesced_frames;