iwlegacy: remove sync_cmd_mutex

We now use priv->mutex to serialize sync command, remove old
priv->sync_cmd_mutex and add assertion that priv->mutex must be locked.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

4 files changed, 2 insertions, 5 deletions

diff --git a/drivers/net/wireless/iwlegacy/iwl-dev.h b/drivers/net/wireless/iwlegacy/iwl-dev.h
index df19d5c69e7f..2d87dba2cfa3 100644
--- a/drivers/net/wireless/iwlegacy/iwl-dev.h
+++ b/drivers/net/wireless/iwlegacy/iwl-dev.h
@@ -1077,7 +1077,6 @@ struct iwl_priv {
         spinlock_t hcmd_lock;   /* protect hcmd */
         spinlock_t reg_lock;    /* protect hw register access */
         struct mutex mutex;
-        struct mutex sync_cmd_mutex; /* enable serialization of sync commands */
 
         /* basic pci-network driver stuff */
         struct pci_dev *pci_dev;
diff --git a/drivers/net/wireless/iwlegacy/iwl-hcmd.c b/drivers/net/wireless/iwlegacy/iwl-hcmd.c
index 9d721cbda5bb..62b4b09122cb 100644
--- a/drivers/net/wireless/iwlegacy/iwl-hcmd.c
+++ b/drivers/net/wireless/iwlegacy/iwl-hcmd.c
@@ -145,6 +145,8 @@ int iwl_legacy_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
         int cmd_idx;
         int ret;
 
+        lockdep_assert_held(&priv->mutex);
+
         BUG_ON(cmd->flags & CMD_ASYNC);
 
          /* A synchronous command can not have a callback set. */
@@ -152,7 +154,6 @@ int iwl_legacy_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 
         IWL_DEBUG_INFO(priv, "Attempting to send sync command %s\n",
                         iwl_legacy_get_cmd_string(cmd->id));
-        mutex_lock(&priv->sync_cmd_mutex);
 
         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
         IWL_DEBUG_INFO(priv, "Setting HCMD_ACTIVE for command %s\n",
@@ -224,7 +225,6 @@ fail:
                 cmd->reply_page = 0;
         }
 out:
-        mutex_unlock(&priv->sync_cmd_mutex);
         return ret;
 }
 EXPORT_SYMBOL(iwl_legacy_send_cmd_sync);
diff --git a/drivers/net/wireless/iwlegacy/iwl3945-base.c b/drivers/net/wireless/iwlegacy/iwl3945-base.c
index 5bdcc36f543f..0ee6be6a9c5d 100644
--- a/drivers/net/wireless/iwlegacy/iwl3945-base.c
+++ b/drivers/net/wireless/iwlegacy/iwl3945-base.c
@@ -3815,7 +3815,6 @@ static int iwl3945_init_drv(struct iwl_priv *priv)
         INIT_LIST_HEAD(&priv->free_frames);
 
         mutex_init(&priv->mutex);
-        mutex_init(&priv->sync_cmd_mutex);
 
         priv->ieee_channels = NULL;
         priv->ieee_rates = NULL;
diff --git a/drivers/net/wireless/iwlegacy/iwl4965-base.c b/drivers/net/wireless/iwlegacy/iwl4965-base.c
index 55851ac3add9..f781b7e225b4 100644
--- a/drivers/net/wireless/iwlegacy/iwl4965-base.c
+++ b/drivers/net/wireless/iwlegacy/iwl4965-base.c
@@ -3124,7 +3124,6 @@ static int iwl4965_init_drv(struct iwl_priv *priv)
         INIT_LIST_HEAD(&priv->free_frames);
 
         mutex_init(&priv->mutex);
-        mutex_init(&priv->sync_cmd_mutex);
 
         priv->ieee_channels = NULL;
         priv->ieee_rates = NULL;