From: Eliad Peller <el...@wizery.com>
In case of bad trans state (i.e. fw is not loaded) bail
out immediately instead of calling the trans, which might
not be fully initialized yet.
Also add WARN_ON_ONCE to help debugging where the errorneous
call is coming from.
Signed-off-by: Eliad Peller <eliadx.pel...@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumb...@intel.com>
---
drivers/net/wireless/intel/iwlwifi/iwl-trans.h | 24 ++++++++++++++++++------
1 file changed, 18 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
index 290d538..81b7cb7 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
@@ -1001,8 +1001,10 @@ static inline int iwl_trans_tx(struct iwl_trans *trans,
struct sk_buff *skb,
if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status)))
return -EIO;
- if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
+ if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+ return -EIO;
+ }
return trans->ops->tx(trans, skb, dev_cmd, queue);
}
@@ -1010,8 +1012,10 @@ static inline int iwl_trans_tx(struct iwl_trans *trans,
struct sk_buff *skb,
static inline void iwl_trans_reclaim(struct iwl_trans *trans, int queue,
int ssn, struct sk_buff_head *skbs)
{
- if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
+ if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+ return;
+ }
trans->ops->reclaim(trans, queue, ssn, skbs);
}
@@ -1029,8 +1033,10 @@ iwl_trans_txq_enable_cfg(struct iwl_trans *trans, int
queue, u16 ssn,
{
might_sleep();
- if (unlikely((trans->state != IWL_TRANS_FW_ALIVE)))
+ if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+ return;
+ }
trans->ops->txq_enable(trans, queue, ssn, cfg, queue_wdg_timeout);
}
@@ -1070,8 +1076,10 @@ static inline void iwl_trans_freeze_txq_timer(struct
iwl_trans *trans,
unsigned long txqs,
bool freeze)
{
- if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
+ if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+ return;
+ }
if (trans->ops->freeze_txq_timer)
trans->ops->freeze_txq_timer(trans, txqs, freeze);
@@ -1080,8 +1088,10 @@ static inline void iwl_trans_freeze_txq_timer(struct
iwl_trans *trans,
static inline void iwl_trans_block_txq_ptrs(struct iwl_trans *trans,
bool block)
{
- if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
+ if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+ return;
+ }
if (trans->ops->block_txq_ptrs)
trans->ops->block_txq_ptrs(trans, block);
@@ -1090,8 +1100,10 @@ static inline void iwl_trans_block_txq_ptrs(struct
iwl_trans *trans,
static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans,
u32 txqs)
{
- if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
+ if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+ return -EIO;
+ }
return trans->ops->wait_tx_queue_empty(trans, txqs);
}
--
2.5.0
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