From: Johannes Berg <johannes.berg@xxxxxxxxx> When a firmware error occurs, don't just abort synchronous commands but also return an error (-EIO) and block any new commands as well. Currently, an error is only returned if WANT_SKB was set which is confusing and can lead to issues. Blocking is done until a new firmware image is loaded. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> --- drivers/net/wireless/iwlwifi/pcie/internal.h | 1 + drivers/net/wireless/iwlwifi/pcie/rx.c | 1 + drivers/net/wireless/iwlwifi/pcie/trans.c | 3 +++ drivers/net/wireless/iwlwifi/pcie/tx.c | 10 ++++++++++ 4 files changed, 15 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/pcie/internal.h b/drivers/net/wireless/iwlwifi/pcie/internal.h index 847ef1e..1f065c6 100644 --- a/drivers/net/wireless/iwlwifi/pcie/internal.h +++ b/drivers/net/wireless/iwlwifi/pcie/internal.h @@ -296,6 +296,7 @@ enum { STATUS_TPOWER_PMI, STATUS_INT_ENABLED, STATUS_RFKILL, + STATUS_FW_ERROR, }; #define IWL_TRANS_GET_PCIE_TRANS(_iwl_trans) \ diff --git a/drivers/net/wireless/iwlwifi/pcie/rx.c b/drivers/net/wireless/iwlwifi/pcie/rx.c index 25e6f86..11a93ed 100644 --- a/drivers/net/wireless/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/iwlwifi/pcie/rx.c @@ -582,6 +582,7 @@ static void iwl_irq_handle_error(struct iwl_trans *trans) iwl_dump_csr(trans); iwl_dump_fh(trans, NULL); + set_bit(STATUS_FW_ERROR, &trans_pcie->status); clear_bit(STATUS_HCMD_ACTIVE, &trans_pcie->status); wake_up(&trans_pcie->wait_command_queue); diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index 74d4c79..3adbf4c 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -1026,6 +1026,7 @@ static int iwl_load_given_ucode(struct iwl_trans *trans, static int iwl_trans_pcie_start_fw(struct iwl_trans *trans, const struct fw_img *fw) { + struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); int ret; bool hw_rfkill; @@ -1035,6 +1036,8 @@ static int iwl_trans_pcie_start_fw(struct iwl_trans *trans, return -EIO; } + clear_bit(STATUS_FW_ERROR, &trans_pcie->status); + iwl_enable_rfkill_int(trans); /* If platform's RF_KILL switch is NOT set to KILL */ diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index ae73bd3..dcc7e12 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -915,6 +915,13 @@ static int iwl_send_cmd_sync(struct iwl_trans *trans, struct iwl_host_cmd *cmd) } } + if (test_bit(STATUS_FW_ERROR, &trans_pcie->status)) { + IWL_ERR(trans, "FW error in SYNC CMD %s\n", + trans_pcie_get_cmd_string(trans_pcie, cmd->id)); + ret = -EIO; + goto cancel; + } + if (test_bit(STATUS_RFKILL, &trans_pcie->status)) { IWL_DEBUG_RF_KILL(trans, "RFKILL in SYNC CMD... no rsp\n"); ret = -ERFKILL; @@ -954,6 +961,9 @@ int iwl_trans_pcie_send_cmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + if (test_bit(STATUS_FW_ERROR, &trans_pcie->status)) + return -EIO; + if (test_bit(STATUS_RFKILL, &trans_pcie->status)) return -ERFKILL; -- 1.8.0 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html