iwlagn: move hcmd_lock to transport layer

Since it is needed for host commands only, it is needed in transport layer only

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index da6cc59..78bd2f6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -146,10 +146,12 @@
  * struct iwl_trans - transport common data
  * @ops - pointer to iwl_trans_ops
  * @shrd - pointer to iwl_shared which holds shared data from the upper layer
+ * @hcmd_lock: protects HCMD
  */
 struct iwl_trans {
 	const struct iwl_trans_ops *ops;
 	struct iwl_shared *shrd;
+	spinlock_t hcmd_lock;
 
 	/* pointer to trans specific struct */
 	/*Ensure that this pointer will always be aligned to sizeof pointer */