diff options
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-drv.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c index 41ae4fae4b8a..c4e50f204630 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* - * Copyright (C) 2005-2014, 2018-2021 Intel Corporation + * Copyright (C) 2005-2014, 2018-2023 Intel Corporation * Copyright (C) 2013-2015 Intel Mobile Communications GmbH * Copyright (C) 2016-2017 Intel Deutschland GmbH */ @@ -1415,6 +1415,9 @@ _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op) struct iwl_op_mode *op_mode = NULL; int retry, max_retry = !!iwlwifi_mod_params.fw_restart * IWL_MAX_INIT_RETRY; + /* also protects start/stop from racing against each other */ + lockdep_assert_held(&iwlwifi_opmode_table_mtx); + for (retry = 0; retry <= max_retry; retry++) { #ifdef CONFIG_IWLWIFI_DEBUGFS @@ -1445,6 +1448,9 @@ _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op) static void _iwl_op_mode_stop(struct iwl_drv *drv) { + /* also protects start/stop from racing against each other */ + lockdep_assert_held(&iwlwifi_opmode_table_mtx); + /* op_mode can be NULL if its start failed */ if (drv->op_mode) { iwl_op_mode_stop(drv->op_mode); @@ -1728,11 +1734,6 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context) } mutex_unlock(&iwlwifi_opmode_table_mtx); - /* - * Complete the firmware request last so that - * a driver unbind (stop) doesn't run while we - * are doing the start() above. - */ complete(&drv->request_firmware_complete); /* @@ -1837,11 +1838,12 @@ void iwl_drv_stop(struct iwl_drv *drv) { wait_for_completion(&drv->request_firmware_complete); + mutex_lock(&iwlwifi_opmode_table_mtx); + _iwl_op_mode_stop(drv); iwl_dealloc_ucode(drv); - mutex_lock(&iwlwifi_opmode_table_mtx); /* * List is empty (this item wasn't added) * when firmware loading failed -- in that |