sfc: SFX7101: Remove workaround for bad link training

Early versions of the SFX7101 firmware could complete link training in
a state where it would not adequately cancel noise (Solarflare bug
10750).  We previously worked around this by resetting the PHY after
seeing many Ethernet CRC errors.  This workaround is unsafe since it
takes no account of the interval between errors; it also appears to
be unnecessary with production firmware.  Therefore remove it.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 20 deletions

diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c
index 19cfc318954c..80c8d6e3131e 100644
--- a/drivers/net/sfc/tenxpress.c
+++ b/drivers/net/sfc/tenxpress.c
@@ -189,25 +189,12 @@
  * rails */
 #define LNPGA_PDOWN_WAIT        (HZ / 5)
 
-static int crc_error_reset_threshold = 100;
-module_param(crc_error_reset_threshold, int, 0644);
-MODULE_PARM_DESC(crc_error_reset_threshold,
-                 "Max number of CRC errors before XAUI reset");
-
 struct tenxpress_phy_data {
         enum efx_loopback_mode loopback_mode;
-        atomic_t bad_crc_count;
         enum efx_phy_mode phy_mode;
         int bad_lp_tries;
 };
 
-void tenxpress_crc_err(struct efx_nic *efx)
-{
-        struct tenxpress_phy_data *phy_data = efx->phy_data;
-        if (phy_data != NULL)
-                atomic_inc(&phy_data->bad_crc_count);
-}
-
 static ssize_t show_phy_short_reach(struct device *dev,
                                     struct device_attribute *attr, char *buf)
 {
@@ -627,13 +614,6 @@ static void tenxpress_phy_poll(struct efx_nic *efx)
 
         if (phy_data->phy_mode != PHY_MODE_NORMAL)
                 return;
-
-        if (EFX_WORKAROUND_10750(efx) &&
-            atomic_read(&phy_data->bad_crc_count) > crc_error_reset_threshold) {
-                EFX_ERR(efx, "Resetting XAUI due to too many CRC errors\n");
-                falcon_reset_xaui(efx);
-                atomic_set(&phy_data->bad_crc_count, 0);
-        }
 }
 
 static void tenxpress_phy_fini(struct efx_nic *efx)