[PATCH AUTOSEL 4.14 56/66] iwlwifi: add an extra firmware state in the transport

Sasha Levin
2020-12-23T02:37:49Z

From: Johannes Berg <johannes.berg@intel.com>

[ Upstream commit b2ed841ed070ccbe908016537f429a3a8f0221bf ]

Start tracking not just if the firmware is dead or alive,
but also if it's starting.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201209231352.33e50d40b688.I8bbd41af7aa5e769273a6fc1c06fbf548dd2eb26@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/iwlwifi/iwl-trans.h | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
index 7de7dac3260ce..8e567e53a4333 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
@@ -600,12 +600,14 @@ struct iwl_trans_ops {
/**
* enum iwl_trans_state - state of the transport layer
*
- * @IWL_TRANS_NO_FW: no fw has sent an alive response
- * @IWL_TRANS_FW_ALIVE: a fw has sent an alive response
+ * @IWL_TRANS_NO_FW: firmware wasn't started yet, or crashed
+ * @IWL_TRANS_FW_STARTED: FW was started, but not alive yet
+ * @IWL_TRANS_FW_ALIVE: FW has sent an alive response
*/
enum iwl_trans_state {
- IWL_TRANS_NO_FW = 0,
- IWL_TRANS_FW_ALIVE = 1,
+ IWL_TRANS_NO_FW,
+ IWL_TRANS_FW_STARTED,
+ IWL_TRANS_FW_ALIVE,
};

/**
@@ -824,12 +826,18 @@ static inline int iwl_trans_start_fw(struct iwl_trans *trans,
const struct fw_img *fw,
bool run_in_rfkill)
{
+ int ret;
+
might_sleep();

WARN_ON_ONCE(!trans->rx_mpdu_cmd);

clear_bit(STATUS_FW_ERROR, &trans->status);
- return trans->ops->start_fw(trans, fw, run_in_rfkill);
+ ret = trans->ops->start_fw(trans, fw, run_in_rfkill);
+ if (ret == 0)
+ trans->state = IWL_TRANS_FW_STARTED;
+
+ return ret;
}

static inline int iwl_trans_update_sf(struct iwl_trans *trans,
--
2.27.0