iwlwifi: remove late null-check and duplicate bug_on

These pieces of code appear to be useless. The BUG_ON is also performed in
iwl_send_cmd_async.

Serious karma would be needed to enter iwl_ativate_qos with a null priv.
I had a deja vu when patching this, but for the life of me I couldn't track
down a similar patch.
Signed-off-by: Ian Schram <ischram@telenet.be>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl3945-base.c

@@ -808,10 +808,6 @@ int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 
 int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 {
-	/* A command can not be asynchronous AND expect an SKB to be set. */
-	BUG_ON((cmd->meta.flags & CMD_ASYNC) &&
-	       (cmd->meta.flags & CMD_WANT_SKB));
-
 	if (cmd->meta.flags & CMD_ASYNC)
 		return iwl_send_cmd_async(priv, cmd);
 
@@ -1968,9 +1964,6 @@ static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 {
 	unsigned long flags;
 
-	if (priv == NULL)
-		return;
-
 	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 		return;
 

drivers/net/wireless/iwlwifi/iwl4965-base.c

@@ -806,10 +806,6 @@ int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 
 int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 {
-	/* A command can not be asynchronous AND expect an SKB to be set. */
-	BUG_ON((cmd->meta.flags & CMD_ASYNC) &&
-	       (cmd->meta.flags & CMD_WANT_SKB));
-
 	if (cmd->meta.flags & CMD_ASYNC)
 		return iwl_send_cmd_async(priv, cmd);
 
@@ -2040,9 +2036,6 @@ static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 {
 	unsigned long flags;
 
-	if (priv == NULL)
-		return;
-
 	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 		return;