libertas: make lbs_cmd() usage nicer

Define a macro that relieves the caller from having to use sizeof on
the command structure when calling lbs_cmd(), and move the prototype
of __lbs_cmd() to a new cmd.h file.
Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/libertas/cmd.c

@@ -1994,7 +1994,7 @@ void lbs_ps_confirm_sleep(struct lbs_private *priv, u16 psmode)
  *                      the result code from the firmware
  */
 
-int lbs_cmd(struct lbs_private *priv, uint16_t command, void *cmd, int cmd_size,
+int __lbs_cmd(struct lbs_private *priv, uint16_t command, void *cmd, int cmd_size,
 	      int (*callback)(struct lbs_private *, unsigned long, struct cmd_ds_command *),
 	      unsigned long callback_arg)
 {
@@ -2066,6 +2066,6 @@ int lbs_cmd(struct lbs_private *priv, uint16_t command, void *cmd, int cmd_size,
 	lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(lbs_cmd);
+EXPORT_SYMBOL_GPL(__lbs_cmd);
 
 

drivers/net/wireless/libertas/cmd.h

+/* Copyright (C) 2007, Red Hat, Inc. */
+
+#ifndef _LBS_CMD_H_
+#define _LBS_CMD_H_
+
+#include "hostcmd.h"
+#include "dev.h"
+
+#define lbs_cmd(priv, cmdnr, cmd, callback, callback_arg) \
+	__lbs_cmd(priv, cmdnr, &cmd, sizeof(cmd), callback, callback_arg)
+
+int __lbs_cmd(struct lbs_private *priv, uint16_t command, void *cmd, int cmd_size, 
+	      int (*callback)(struct lbs_private *, unsigned long, struct cmd_ds_command *),
+	      unsigned long callback_arg);
+
+#endif /* _LBS_CMD_H */

drivers/net/wireless/libertas/decl.h

@@ -23,10 +23,6 @@ void lbs_send_tx_feedback(struct lbs_private *priv);
 
 int lbs_free_cmd_buffer(struct lbs_private *priv);
 
-int lbs_cmd(struct lbs_private *priv, uint16_t command, void *cmd, int cmd_size, 
-	    int (*callback)(struct lbs_private *, unsigned long, struct cmd_ds_command *),
-	    unsigned long callback_arg);
-
 int lbs_prepare_and_send_command(struct lbs_private *priv,
 	u16 cmd_no,
 	u16 cmd_action,

drivers/net/wireless/libertas/if_usb.c

@@ -13,6 +13,7 @@
 #include "decl.h"
 #include "defs.h"
 #include "dev.h"
+#include "cmd.h"
 #include "if_usb.h"
 
 #define MESSAGE_HEADER_LEN	4
@@ -108,7 +109,7 @@ static void if_usb_set_boot2_ver(struct lbs_private *priv)
 	b2_cmd.action = 0;
 	b2_cmd.version = priv->boot2_version;
 
-	if (lbs_cmd(priv, CMD_SET_BOOT2_VER, &b2_cmd, sizeof(b2_cmd), NULL, 0))
+	if (lbs_cmd(priv, CMD_SET_BOOT2_VER, b2_cmd, NULL, 0))
 		lbs_deb_usb("Setting boot2 version failed\n");
 }