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iwlwifi: pcie: stop sending commands to dead firmware

Browse source 
If we call ieee80211_hw_restart, it means that the
firmware is in bad condition and will be reset soon.
Since the firmware will be reset, there is no good
reason to keep sending host commands.

Signed-off-by: Alexander Bondar <alexander.bondar@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Alexander Bondar 2013-11-05 17:35:14 +02:00 committed by Emmanuel Grumbach
parent 3fde33b762
commit 6860bd15c2
3 changed files with 13 additions and 4 deletions
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8
drivers/net/wireless/iwlwifi/pcie/internal.h
View file

@ -477,4 +477,12 @@ static inline bool iwl_is_rfkill_set(struct iwl_trans *trans)
CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
}
static inline void iwl_nic_error(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
set_bit(STATUS_FW_ERROR, &trans_pcie->status);
iwl_op_mode_nic_error(trans->op_mode);
}
#endif /* __iwl_trans_int_pcie_h__ */

3
drivers/net/wireless/iwlwifi/pcie/rx.c
View file

@ -800,12 +800,13 @@ static void iwl_pcie_irq_handle_error(struct iwl_trans *trans)
iwl_pcie_dump_csr(trans);
iwl_dump_fh(trans, NULL);
/* set the ERROR bit before we wake up the caller */
set_bit(STATUS_FW_ERROR, &trans_pcie->status);
clear_bit(STATUS_HCMD_ACTIVE, &trans_pcie->status);
wake_up(&trans_pcie->wait_command_queue);
local_bh_disable();
iwl_op_mode_nic_error(trans->op_mode);
iwl_nic_error(trans);
local_bh_enable();
}

6
drivers/net/wireless/iwlwifi/pcie/tx.c
View file

@ -207,7 +207,7 @@ static void iwl_pcie_txq_stuck_timer(unsigned long data)
IWL_ERR(trans, "scratch %d = 0x%08x\n", i,
le32_to_cpu(txq->scratchbufs[i].scratch));
iwl_op_mode_nic_error(trans->op_mode);
iwl_nic_error(trans);
}
/*
@ -1023,7 +1023,7 @@ static void iwl_pcie_cmdq_reclaim(struct iwl_trans *trans, int txq_id, int idx)
if (nfreed++ > 0) {
IWL_ERR(trans, "HCMD skipped: index (%d) %d %d\n",
idx, q->write_ptr, q->read_ptr);
iwl_op_mode_nic_error(trans->op_mode);
iwl_nic_error(trans);
}
}
@ -1562,7 +1562,7 @@ static int iwl_pcie_send_hcmd_sync(struct iwl_trans *trans,
get_cmd_string(trans_pcie, cmd->id));
ret = -ETIMEDOUT;
iwl_op_mode_nic_error(trans->op_mode);
iwl_nic_error(trans);
goto cancel;
}