iwlwifi: mvm: remove iwlmvm's tfd_q_hang_detect module parameter

This should be controlled by the firmware debugging mechanism
and not by a module parameter. This has always been true.
Remove it and assume it is set.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200424182644.b6e4982e62ae.I7f7352f79c40ada2f221bd4b41449a40821e833f@changeid

drivers/net/wireless/intel/iwlwifi/mvm/mvm.h

@@ -5,10 +5,9 @@
  *
  * GPL LICENSE SUMMARY
  *
- * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2012 - 2014, 2018 - 2020 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
  *
  * 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) 2012 - 2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2012 - 2014, 2018 - 2020 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
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -134,12 +132,10 @@ extern const struct ieee80211_ops iwl_mvm_hw_ops;
  *	We will register to mac80211 to have testmode working. The NIC must not
  *	be up'ed after the INIT fw asserted. This is useful to be able to use
  *	proprietary tools over testmode to debug the INIT fw.
- * @tfd_q_hang_detect: enabled the detection of hung transmit queues
  * @power_scheme: one of enum iwl_power_scheme
  */
 struct iwl_mvm_mod_params {
 	bool init_dbg;
-	bool tfd_q_hang_detect;
 	int power_scheme;
 };
 extern struct iwl_mvm_mod_params iwlmvm_mod_params;

drivers/net/wireless/intel/iwlwifi/mvm/ops.c

@@ -5,10 +5,9 @@
  *
  * GPL LICENSE SUMMARY
  *
- * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2012 - 2014, 2018 - 2020 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
  *
  * 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) 2012 - 2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2012 - 2014, 2018 - 2020 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
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -94,7 +92,6 @@ static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
 
 struct iwl_mvm_mod_params iwlmvm_mod_params = {
 	.power_scheme = IWL_POWER_SCHEME_BPS,
-	.tfd_q_hang_detect = true
 	/* rest of fields are 0 by default */
 };
 
@@ -104,10 +101,6 @@ MODULE_PARM_DESC(init_dbg,
 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444);
 MODULE_PARM_DESC(power_scheme,
 		 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
-module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
-		   bool, 0444);
-MODULE_PARM_DESC(tfd_q_hang_detect,
-		 "TFD queues hang detection (default: true");
 
 /*
  * module init and exit functions

drivers/net/wireless/intel/iwlwifi/mvm/sta.c

@@ -5,10 +5,9 @@
  *
  * GPL LICENSE SUMMARY
  *
- * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved.
+ * Copyright(c) 2012 - 2015, 2018 - 2020 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
  *
  * 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) 2012 - 2015 Intel Corporation. All rights reserved.
+ * Copyright(c) 2012 - 2015, 2018 - 2020 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
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -1965,9 +1963,8 @@ void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue,
 					  u8 sta_id, u8 fifo)
 {
-	unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
-		mvm->trans->trans_cfg->base_params->wd_timeout :
-		IWL_WATCHDOG_DISABLED;
+	unsigned int wdg_timeout =
+		mvm->trans->trans_cfg->base_params->wd_timeout;
 	struct iwl_trans_txq_scd_cfg cfg = {
 		.fifo = fifo,
 		.sta_id = sta_id,
@@ -1983,9 +1980,8 @@ static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue,
 
 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id)
 {
-	unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
-		mvm->trans->trans_cfg->base_params->wd_timeout :
-		IWL_WATCHDOG_DISABLED;
+	unsigned int wdg_timeout =
+		mvm->trans->trans_cfg->base_params->wd_timeout;
 
 	WARN_ON(!iwl_mvm_has_new_tx_api(mvm));
 

drivers/net/wireless/intel/iwlwifi/mvm/utils.c

@@ -5,10 +5,9 @@
  *
  * GPL LICENSE SUMMARY
  *
- * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
- * Copyright(c) 2018 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) 2012 - 2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
- * Copyright(c) 2018 Intel Corporation
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -952,8 +950,7 @@ unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
 				IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) &&
 		    vif && vif->type == NL80211_IFTYPE_AP)
 			return IWL_WATCHDOG_DISABLED;
-		return iwlmvm_mod_params.tfd_q_hang_detect ?
-			default_timeout : IWL_WATCHDOG_DISABLED;
+		return default_timeout;
 	}
 
 	trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);