iwlwifi: mvm: rfi: don't lock mvm->mutex when sending config command

The mutex is already locked in iwl_mvm_mac_start.

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Fixes: 21254908cbe9 ("iwlwifi: mvm: add RFI-M support")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20210326125611.703288ea058d.I82a0312389032d07c3b478bef3e938e06bfa7df6@changeid

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
index 1307605..34ddef9 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
@@ -1786,10 +1786,13 @@ static ssize_t iwl_dbgfs_rfi_freq_table_write(struct iwl_mvm *mvm, char *buf,
                return -EINVAL;
 
        /* value zero triggers re-sending the default table to the device */
-       if (!op_id)
+       if (!op_id) {
+               mutex_lock(&mvm->mutex);
                ret = iwl_rfi_send_config_cmd(mvm, NULL);
-       else
+               mutex_unlock(&mvm->mutex);
+       } else {
                ret = -EOPNOTSUPP; /* in the future a new table will be added */
+       }
 
        return ret ?: count;
 }

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c b/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c
index 8739190..0b81806 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright (C) 2020 Intel Corporation
+ * Copyright (C) 2020 - 2021 Intel Corporation
  */
 
 #include "mvm.h"
@@ -66,6 +66,8 @@ int iwl_rfi_send_config_cmd(struct iwl_mvm *mvm, struct iwl_rfi_lut_entry *rfi_t
        if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_RFIM_SUPPORT))
                return -EOPNOTSUPP;
 
+       lockdep_assert_held(&mvm->mutex);
+
        /* in case no table is passed, use the default one */
        if (!rfi_table) {
                memcpy(cmd.table, iwl_rfi_table, sizeof(cmd.table));
@@ -75,9 +77,7 @@ int iwl_rfi_send_config_cmd(struct iwl_mvm *mvm, struct iwl_rfi_lut_entry *rfi_t
                cmd.oem = 1;
        }
 
-       mutex_lock(&mvm->mutex);
        ret = iwl_mvm_send_cmd(mvm, &hcmd);
-       mutex_unlock(&mvm->mutex);
 
        if (ret)
                IWL_ERR(mvm, "Failed to send RFI config cmd %d\n", ret);