1 files changed, 6 insertions, 16 deletions

diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index 61ddd2c6e75..734fcfb52e8 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * Driver for Solarflare Solarstorm network controllers and boards
  * Copyright 2005-2006 Fen Systems Ltd.
- * Copyright 2006-2009 Solarflare Communications Inc.
+ * Copyright 2006-2010 Solarflare Communications Inc.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 as published
@@ -1478,36 +1478,26 @@ static void falcon_init_rx_cfg(struct efx_nic *efx)
         /* RX control FIFO thresholds (32 entries) */
         const unsigned ctrl_xon_thr = 20;
         const unsigned ctrl_xoff_thr = 25;
-        /* RX data FIFO thresholds (256-byte units; size varies) */
-        int data_xon_thr = efx_nic_rx_xon_thresh >> 8;
-        int data_xoff_thr = efx_nic_rx_xoff_thresh >> 8;
         efx_oword_t reg;
 
         efx_reado(efx, &reg, FR_AZ_RX_CFG);
         if (efx_nic_rev(efx) <= EFX_REV_FALCON_A1) {
                 /* Data FIFO size is 5.5K */
-                if (data_xon_thr < 0)
-                        data_xon_thr = 512 >> 8;
-                if (data_xoff_thr < 0)
-                        data_xoff_thr = 2048 >> 8;
                 EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_DESC_PUSH_EN, 0);
                 EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_USR_BUF_SIZE,
                                     huge_buf_size);
-                EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_XON_MAC_TH, data_xon_thr);
-                EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_XOFF_MAC_TH, data_xoff_thr);
+                EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_XON_MAC_TH, 512 >> 8);
+                EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_XOFF_MAC_TH, 2048 >> 8);
                 EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_XON_TX_TH, ctrl_xon_thr);
                 EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_XOFF_TX_TH, ctrl_xoff_thr);
         } else {
                 /* Data FIFO size is 80K; register fields moved */
-                if (data_xon_thr < 0)
-                        data_xon_thr = 27648 >> 8; /* ~3*max MTU */
-                if (data_xoff_thr < 0)
-                        data_xoff_thr = 54272 >> 8; /* ~80Kb - 3*max MTU */
                 EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_DESC_PUSH_EN, 0);
                 EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_USR_BUF_SIZE,
                                     huge_buf_size);
-                EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_XON_MAC_TH, data_xon_thr);
-                EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_XOFF_MAC_TH, data_xoff_thr);
+                /* Send XON and XOFF at ~3 * max MTU away from empty/full */
+                EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_XON_MAC_TH, 27648 >> 8);
+                EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_XOFF_MAC_TH, 54272 >> 8);
                 EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_XON_TX_TH, ctrl_xon_thr);
                 EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_XOFF_TX_TH, ctrl_xoff_thr);
                 EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_INGR_EN, 1);