[PATCH 02/11] iwlwifi: pcie: don't count on the FW to set persistence mode

[Luca Coelho <luca@coelho.fi>]

From: Haim Dreyfuss <haim.dreyfuss@intel.com>

Apparently the FW can't set the persistence in all flows. Don't count
on the FW setting it in AX210 devices or above either to avoid
potential resets on resume.

Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
index 8ccfc7cc7348..3bcbc2967c88 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -5,10 +5,9 @@
  *
  * GPL LICENSE SUMMARY
  *
- * Copyright(c) 2007 - 2015 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
- * Copyright(c) 2018 - 2019 Intel Corporation
+ * Copyright(c) 2007 - 2015, 2018 - 2020 Intel Corporation
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as
@@ -28,10 +27,9 @@
  *
  * BSD LICENSE
  *
- * Copyright(c) 2005 - 2015 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
- * Copyright(c) 2018 - 2019 Intel Corporation
+ * Copyright(c) 2007 - 2015, 2018 - 2020 Intel Corporation
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -1495,14 +1493,10 @@ static int iwl_trans_pcie_d3_suspend(struct iwl_trans *trans, bool test,
 	int ret;
 	struct iwl_trans_pcie *trans_pcie =  IWL_TRANS_GET_PCIE_TRANS(trans);
 
-	/*
-	 * Family IWL_DEVICE_FAMILY_AX210 and above persist mode is set by FW.
-	 */
-	if (!reset && trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210) {
+	if (!reset)
 		/* Enable persistence mode to avoid reset */
 		iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
 			    CSR_HW_IF_CONFIG_REG_PERSIST_MODE);
-	}
 
 	if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
 		iwl_write_umac_prph(trans, UREG_DOORBELL_TO_ISR6,
-- 
2.26.2