diff options
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/internal.h | 5 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 24 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/tx.c | 4 |
3 files changed, 28 insertions, 5 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h index d9688c7bed07..76a512cd2e5c 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h +++ b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h @@ -447,6 +447,11 @@ struct iwl_trans const struct iwl_cfg_trans_params *cfg_trans); void iwl_trans_pcie_free(struct iwl_trans *trans); +bool __iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans); +#define _iwl_trans_pcie_grab_nic_access(trans) \ + __cond_lock(nic_access_nobh, \ + likely(__iwl_trans_pcie_grab_nic_access(trans))) + /***************************************************** * RX ******************************************************/ diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c index 861dbc03d183..239bc177a3e5 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c @@ -1978,12 +1978,16 @@ static void iwl_trans_pcie_removal_wk(struct work_struct *wk) module_put(THIS_MODULE); } -static bool iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans) +/* + * This version doesn't disable BHs but rather assumes they're + * already disabled. + */ +bool __iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans) { int ret; struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - spin_lock_bh(&trans_pcie->reg_lock); + spin_lock(&trans_pcie->reg_lock); if (trans_pcie->cmd_hold_nic_awake) goto out; @@ -2068,7 +2072,7 @@ static bool iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans) } err: - spin_unlock_bh(&trans_pcie->reg_lock); + spin_unlock(&trans_pcie->reg_lock); return false; } @@ -2081,6 +2085,20 @@ out: return true; } +static bool iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans) +{ + bool ret; + + local_bh_disable(); + ret = __iwl_trans_pcie_grab_nic_access(trans); + if (ret) { + /* keep BHs disabled until iwl_trans_pcie_release_nic_access */ + return ret; + } + local_bh_enable(); + return false; +} + static void iwl_trans_pcie_release_nic_access(struct iwl_trans *trans) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c index 0346505351f5..4f6c187eed69 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c @@ -643,7 +643,7 @@ static int iwl_pcie_set_cmd_in_flight(struct iwl_trans *trans, * returned. This needs to be done only on NICs that have * apmg_wake_up_wa set (see above.) */ - if (!iwl_trans_grab_nic_access(trans)) + if (!_iwl_trans_pcie_grab_nic_access(trans)) return -EIO; /* @@ -652,7 +652,7 @@ static int iwl_pcie_set_cmd_in_flight(struct iwl_trans *trans, * already true, so it's OK to unconditionally set it to true. */ trans_pcie->cmd_hold_nic_awake = true; - spin_unlock_bh(&trans_pcie->reg_lock); + spin_unlock(&trans_pcie->reg_lock); return 0; } |