Staging: rtl8192e: Fix declaration of symbols

The two declarations with issues in rtl_wx.h:

* function: struct iw_statistics *r8192_get_wireless_stats();
* variable: extern struct iw_handler_def r8192_wx_handlers_def;

The symbol 'r8192_get_wireless_stats' is declared as 'extern' but it is only used in the local scope. The declaration is deleted of rtl_wx.h, fixing the conflict with the 'extern' and 'static' scope.

The symbol 'r8192_wx_handlers_def' was fixed of some issues related to variable declaration marked as 'extern' implicitly, causing this sparse warning:

drivers/staging/rtl8192e/rtl8192e/rtl_wx.c:1323:24: warning: symbol 'r8192_wx_handlers_def' was not declared. Should it be static?

Resolved incluing the fixed header to rtl_wx.c

Also, isn't declared as constant variable, so it declared as such. And delete unnecessary cast in rtl_core.c.

---
 drivers/staging/rtl8192e/rtl8192e/rtl_core.c | 3 +--
 drivers/staging/rtl8192e/rtl8192e/rtl_wx.c   | 3 ++-
 drivers/staging/rtl8192e/rtl8192e/rtl_wx.h   | 3 +--
 3 files changed, 4 insertions(+), 5 deletions(-)

b/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
index c01abc2..fa087b6 100644

@@ -2926,8 +2926,7 @@ static int rtl8192_pci_probe(struct pci_dev *pdev,
 
 	dev->netdev_ops = &rtl8192_netdev_ops;
 
-	dev->wireless_handlers = (struct iw_handler_def *)
-				 &r8192_wx_handlers_def;
+	dev->wireless_handlers = &r8192_wx_handlers_def;
 	dev->ethtool_ops = &rtl819x_ethtool_ops;
 
 	dev->type = ARPHRD_ETHER;

b/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
index 498995d..7d8fcde 100644

@@ -19,6 +19,7 @@
 
 #include <linux/string.h>
 #include "rtl_core.h"
+#include "rtl_wx.h"
 
 #define RATE_COUNT 12
 static u32 rtl8192_rates[] = {

@@ -1320,7 +1321,7 @@ static struct iw_statistics

*r8192_get_wireless_stats(struct net_device *dev)
return wstats;
}

-struct iw_handler_def r8192_wx_handlers_def = { +const struct iw_handler_def r8192_wx_handlers_def = {
.standard = r8192_wx_handlers, .num_standard = ARRAY_SIZE(r8192_wx_handlers), .private = r8192_private_handler,

b/drivers/staging/rtl8192e/rtl8192e/rtl_wx.h
index 6a51a25..5839851 100644

@@ -24,8 +24,7 @@ struct net_device;
 struct iw_handler_def;
 struct iw_statistics;
 
-extern struct iw_handler_def r8192_wx_handlers_def;
-struct iw_statistics *r8192_get_wireless_stats(struct net_device *dev);
+extern const struct iw_handler_def r8192_wx_handlers_def;
 u16 rtl8192_11n_user_show_rates(struct net_device *dev);
 
 #endif

1.9.1