From: Arik Nemtsov Date: Sun, 1 Dec 2013 11:02:18 +0000 (+0200) Subject: iwlwifi: trans: prevent tx and cmds during FW error X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3fc07953bae891c6adb08ef594cc9c527804c9c3;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git iwlwifi: trans: prevent tx and cmds during FW error Stop Tx and commands from arriving to the transport layer when a FW error has occurred. A HW recovery should take place before. Remove transport specific checks of the same nature (note that not all transports were protected). Signed-off-by: Arik Nemtsov Reviewed-by: Johannes Berg Signed-off-by: Emmanuel Grumbach --- diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h index 64196037ce9b..c71519d54402 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans.h @@ -620,6 +620,9 @@ static inline int iwl_trans_send_cmd(struct iwl_trans *trans, { int ret; + if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status))) + return -EIO; + if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) { IWL_ERR(trans, "%s bad state = %d", __func__, trans->state); return -EIO; @@ -659,6 +662,9 @@ static inline void iwl_trans_free_tx_cmd(struct iwl_trans *trans, static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb, struct iwl_device_cmd *dev_cmd, int queue) { + if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status))) + return -EIO; + if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) IWL_ERR(trans, "%s bad state = %d", __func__, trans->state); diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index a36884e993db..5b63948220c9 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -1606,9 +1606,6 @@ cancel: int iwl_trans_pcie_send_hcmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd) { - if (test_bit(STATUS_FW_ERROR, &trans->status)) - return -EIO; - if (!(cmd->flags & CMD_SEND_IN_RFKILL) && test_bit(STATUS_RFKILL, &trans->status)) { IWL_DEBUG_RF_KILL(trans, "Dropping CMD 0x%x: RF KILL\n",