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@xxxxxxxxxx>
---
drivers/net/wireless/iwlwifi/iwl-agn.c | 4 ----
drivers/net/wireless/iwlwifi/iwl-dev.h | 1 -
drivers/net/wireless/iwlwifi/iwl-hcmd.c | 13 +++++--------
3 files changed, 5 insertions(+), 13 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 0c49d1a..6f188fd 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -2565,9 +2565,6 @@ static void __iwl_down(struct iwl_priv *priv)
priv->bt_full_concurrent = false;
priv->bt_ci_compliance = 0;
- /* Unblock any waiting calls */
- wake_up_interruptible_all(&priv->wait_command_queue);
-
/* Wipe out the EXIT_PENDING status bit if we are not actually
* exiting the module */
if (!exit_pending)
@@ -3814,7 +3811,6 @@ static int iwl_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/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 9e63bd8..ca30f95 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -1306,7 +1306,6 @@ 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/iwlwifi/iwl-hcmd.c b/drivers/net/wireless/iwlwifi/iwl-hcmd.c
index 02499f6..c71c0a4 100644
--- a/drivers/net/wireless/iwlwifi/iwl-hcmd.c
+++ b/drivers/net/wireless/iwlwifi/iwl-hcmd.c
@@ -171,14 +171,13 @@ int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
int cmd_idx;
int ret;
- BUG_ON(cmd->flags & CMD_ASYNC);
+ lockdep_assert_held(&priv->mutex);
/* A synchronous command can not have a callback set. */
- BUG_ON(cmd->callback);
+ BUG_ON((cmd->flags & CMD_ASYNC) || cmd->callback);
IWL_DEBUG_INFO(priv, "Attempting to send sync command %s\n",
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",
@@ -189,7 +188,7 @@ int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
ret = cmd_idx;
IWL_ERR(priv, "Error sending %s: enqueue_hcmd failed: %d\n",
get_cmd_string(cmd->id), ret);
- goto out;
+ return ret;
}
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
@@ -229,8 +228,7 @@ int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
goto cancel;
}
- ret = 0;
- goto out;
+ return 0;
cancel:
if (cmd->flags & CMD_WANT_SKB) {
@@ -248,8 +246,7 @@ fail:
iwl_free_pages(priv, cmd->reply_page);
cmd->reply_page = 0;
}
-out:
- mutex_unlock(&priv->sync_cmd_mutex);
+
return ret;
}
--
1.7.1
--
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