iwlagn: add WARN if tx cmd complete come back late

For error condition, STATUS_HCMD_ACTIVE already got clear before receive
tx cmd complete, give warning

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c
index f57b868c4059..fa2ce398da85 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c
@@ -950,6 +950,11 @@ void iwl_tx_cmd_complete(struct iwl_trans *trans, struct iwl_rx_mem_buffer *rxb,
         iwl_hcmd_queue_reclaim(trans, txq_id, index);
 
         if (!(meta->flags & CMD_ASYNC)) {
+                if (!test_bit(STATUS_HCMD_ACTIVE, &trans->shrd->status)) {
+                        IWL_WARN(trans,
+                                 "HCMD_ACTIVE already clear for command %s\n",
+                                 get_cmd_string(cmd->hdr.cmd));
+                }
                 clear_bit(STATUS_HCMD_ACTIVE, &trans->shrd->status);
                 IWL_DEBUG_INFO(trans, "Clearing HCMD_ACTIVE for command %s\n",
                                get_cmd_string(cmd->hdr.cmd));