From: Konstantin Khorenko <khorenko@virtuozzo.com>
Date:   Fri Jan 10 18:23:19 2020 +0300
Subject: ixgbe: don't check firmware errors
References: bsc#1170284
Reviewed-by: <otto.hollmann@suse.com>
Patch-mainline: not yet, waiting for Intel to send patch upstream
 
There is a check in new ixgbe version driver in RHEL7.7
which verify the firmware error register value for correctness.
    
Apparently seems the check is not fully correct itself
causing kernel to spoil logs (every second).
    
The driver in RHEL7.6 does not have that check.
The driver from vendor site does not have that check.
https://downloadmirror.intel.com/14687/eng/ixgbe-5.6.5.tar.gz
    
So let's drop the check as well in Virtuozzo kernels.
    
https://bugs.centos.org/view.php?id=16495
https://forum.proxmox.com/threads/pve-6-0-7-ixgbe-firmware-errors.58592/
https://jira.sw.ru/browse/PSBM-100722
    
Signed-off-by: Konstantin Khorenko <khorenko@virtuozzo.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index eef479f762f93..b39a1b477b246 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -7913,15 +7913,6 @@ static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter)
 static bool ixgbe_check_fw_error(struct ixgbe_adapter *adapter)
 {
 	struct ixgbe_hw *hw = &adapter->hw;
-	u32 fwsm;
-
-	/* read fwsm.ext_err_ind register and log errors */
-	fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
-
-	if (fwsm & IXGBE_FWSM_EXT_ERR_IND_MASK ||
-	    !(fwsm & IXGBE_FWSM_FW_VAL_BIT))
-		e_dev_warn("Warning firmware error detected FWSM: 0x%08X\n",
-			   fwsm);
 
 	if (hw->mac.ops.fw_recovery_mode && hw->mac.ops.fw_recovery_mode(hw)) {
 		e_dev_err("Firmware recovery mode detected. Limiting functionality. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for details on firmware recovery mode.\n");