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iwlwifi: warn on SKB free w/o op-mode

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If this ever happens, and it looks like some code in PCIe is
a bit broken and might lead to this, we want to know without
crashing, so add a WARN_ON_ONCE().

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210411124418.a18b7443dc55.Ia29836738acf14a55af5504aba90c6fea9fff785@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Johannes Berg
2021-04-11 12:46:29 +03:00
committed by Luca Coelho
parent 3c21990b0c
commit 70c9101d0a
1 changed files with 3 additions and 1 deletions
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4
drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h
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@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright (C) 2005-2014, 2018-2020 Intel Corporation
* Copyright (C) 2005-2014, 2018-2021 Intel Corporation
* Copyright (C) 2013-2014 Intel Mobile Communications GmbH
* Copyright (C) 2015 Intel Deutschland GmbH
*/
@@ -176,6 +176,8 @@ iwl_op_mode_hw_rf_kill(struct iwl_op_mode *op_mode, bool state)
static inline void iwl_op_mode_free_skb(struct iwl_op_mode *op_mode,
struct sk_buff *skb)
{
if (WARN_ON_ONCE(!op_mode))
return;
op_mode->ops->free_skb(op_mode, skb);
}