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iwlwifi: mvm: update ucode status before stopping device

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Leaving ucode_loaded to true after stop_device() has been called
is a recipe for problems. Flows that are not sync'ed with the
driver life cycle (like debugfs hooks and thermal hooks) must
check that the firmware is loaded before they interact with it.
Therefore we need to keep this variable updated with the real
status of the firmware.

Signed-off-by: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Chaya Rachel Ivgi 2016-02-22 10:21:41 +02:00 committed by Emmanuel Grumbach
parent 3d2d442236
commit fcb6b92a68
5 changed files with 12 additions and 9 deletions
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3
drivers/net/wireless/intel/iwlwifi/mvm/d3.c
View File

@ -816,8 +816,7 @@ static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
{
iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
iwl_trans_stop_device(mvm->trans);
iwl_mvm_stop_device(mvm);
/*
* Set the HW restart bit -- this is mostly true as we're
* going to load new firmware and reprogram that, though

4
drivers/net/wireless/intel/iwlwifi/mvm/fw.c
View File

@ -1009,7 +1009,7 @@ int iwl_mvm_up(struct iwl_mvm *mvm)
IWL_DEBUG_INFO(mvm, "RT uCode started.\n");
return 0;
error:
iwl_trans_stop_device(mvm->trans);
iwl_mvm_stop_device(mvm);
return ret;
}
@ -1053,7 +1053,7 @@ int iwl_mvm_load_d3_fw(struct iwl_mvm *mvm)
return 0;
error:
iwl_trans_stop_device(mvm->trans);
iwl_mvm_stop_device(mvm);
return ret;
}

6
drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
View File

@ -972,7 +972,7 @@ static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
*/
iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
iwl_trans_stop_device(mvm->trans);
iwl_mvm_stop_device(mvm);
mvm->scan_status = 0;
mvm->ps_disabled = false;
@ -1141,7 +1141,7 @@ void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
*/
flush_work(&mvm->roc_done_wk);
iwl_trans_stop_device(mvm->trans);
iwl_mvm_stop_device(mvm);
iwl_mvm_async_handlers_purge(mvm);
/* async_handlers_list is empty and will stay empty: HW is stopped */
@ -1172,8 +1172,6 @@ void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
mvm->scan_uid_status[i] = 0;
}
}
mvm->ucode_loaded = false;
}
static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)

6
drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
View File

@ -1549,6 +1549,12 @@ void iwl_mvm_enable_ac_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
iwl_mvm_enable_txq(mvm, queue, mac80211_queue, ssn, &cfg, wdg_timeout);
}
static inline void iwl_mvm_stop_device(struct iwl_mvm *mvm)
{
mvm->ucode_loaded = false;
iwl_trans_stop_device(mvm->trans);
}
/* Thermal management and CT-kill */
void iwl_mvm_tt_tx_backoff(struct iwl_mvm *mvm, u32 backoff);
void iwl_mvm_tt_temp_changed(struct iwl_mvm *mvm, u32 temp);

2
drivers/net/wireless/intel/iwlwifi/mvm/ops.c
View File

@ -643,7 +643,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
err = iwl_run_init_mvm_ucode(mvm, true);
if (!err || !iwlmvm_mod_params.init_dbg)
iwl_trans_stop_device(trans);
iwl_mvm_stop_device(mvm);
iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
mutex_unlock(&mvm->mutex);
/* returns 0 if successful, 1 if success but in rfkill */