iwlwifi: handle RFKILL logic in the transport layer

No HCMD can be sent while RFKILL is asserted. If a SYNC
command is running while RFKILL is asserted the fw will
silently discard it. This means that the driver needs to
wake the process that sleeps on the CMD_SYNC.

Since the RFKILL interrupt is handled in the transport layer
and the code that sleeps in CMD_SYNC is also in the transport
layer, all this logic can be handled there.
This simplifies the work of the op_mode.

So the transport layer will now return -ERFKILL when a CMD
is sent and RFKILL is asserted. This will be the case even
when the CMD is SYNC. The transport layer will return
-ERFKILL straight away.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index b8a155af12cc..288d2297f77d 100644
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -1246,6 +1246,7 @@ static void iwl_trans_pcie_stop_device(struct iwl_trans *trans)
         clear_bit(STATUS_INT_ENABLED, &trans_pcie->status);
         clear_bit(STATUS_DEVICE_ENABLED, &trans_pcie->status);
         clear_bit(STATUS_TPOWER_PMI, &trans_pcie->status);
+        clear_bit(STATUS_RFKILL, &trans_pcie->status);
 }
 
 static void iwl_trans_pcie_wowlan_suspend(struct iwl_trans *trans)
@@ -2206,7 +2207,7 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev,
         }
 
         /* Initialize the wait queue for commands */
-        init_waitqueue_head(&trans->wait_command_queue);
+        init_waitqueue_head(&trans_pcie->wait_command_queue);
         spin_lock_init(&trans->reg_lock);
 
         snprintf(trans->dev_cmd_pool_name, sizeof(trans->dev_cmd_pool_name),