staging: rtl8712: make unsigned length for rtl8717_get{_wpa_, _wpa2_, _}ie

Fixed r8712_get_ie, r8712_get_wpa_ie, r8712_get_wpa2_ie
to have a length as unsigned int pointer instead of signed.

Sparse warnings:

drivers/staging/rtl8712/rtl871x_ioctl_linux.c:173:27: warning: incorrect type in argument 3 (different signedness)
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:173:27:    expected signed int *len
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:173:27:    got unsigned int *<noident>
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:613:35: warning: incorrect type in argument 3 (different signedness)
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:613:35:    expected signed int *len
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:613:35:    got unsigned int *<noident>
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1411:67: warning: incorrect type in argument 3 (different signedness)
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1411:67:    expected signed int *len
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1411:67:    got unsigned int *<noident>
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1992:33: warning: incorrect type in argument 2 (different signedness)
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1992:33:    expected int *rsn_ie_len
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1992:33:    got unsigned int *<noident>
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1998:33: warning: incorrect type in argument 2 (different signedness)
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1998:33:    expected int *rsn_ie_len
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1998:33:    got unsigned int *<noident>
drivers/staging/rtl8712/rtl871x_mlme.c:1701:59: warning: incorrect type in argument 3 (different signedness)
drivers/staging/rtl8712/rtl871x_mlme.c:1701:59:    expected signed int *len
drivers/staging/rtl8712/rtl871x_mlme.c:1701:59:    got unsigned int *<noident>

Signed-off-by: Stefano Manni <stefano.manni@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/ieee80211.c

@@ -107,7 +107,7 @@ u8 *r8712_set_ie(u8 *pbuf, sint index, uint len, u8 *source, uint *frlen)
  * index: the information element id index, limit is the limit for search
  * ---------------------------------------------------------------------------
  */
-u8 *r8712_get_ie(u8 *pbuf, sint index, sint *len, sint limit)
+u8 *r8712_get_ie(u8 *pbuf, sint index, uint *len, sint limit)
 {
 	sint tmp, i;
 	u8 *p;
@@ -211,9 +211,9 @@ int r8712_generate_ie(struct registry_priv *pregistrypriv)
 	return sz;
 }
 
-unsigned char *r8712_get_wpa_ie(unsigned char *pie, int *wpa_ie_len, int limit)
+unsigned char *r8712_get_wpa_ie(unsigned char *pie, uint *wpa_ie_len, int limit)
 {
-	int len;
+	u32 len;
 	u16 val16;
 	unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
 	u8 *pbuf = pie;
@@ -245,7 +245,7 @@ check_next_ie:
 	return NULL;
 }
 
-unsigned char *r8712_get_wpa2_ie(unsigned char *pie, int *rsn_ie_len, int limit)
+unsigned char *r8712_get_wpa2_ie(unsigned char *pie, uint *rsn_ie_len, int limit)
 {
 	return r8712_get_ie(pie, _WPA2_IE_ID_, rsn_ie_len, limit);
 }

drivers/staging/rtl8712/ieee80211.h

@@ -738,9 +738,9 @@ static inline int ieee80211_get_hdrlen(u16 fc)
 struct registry_priv;
 
 u8 *r8712_set_ie(u8 *pbuf, sint index, uint len, u8 *source, uint *frlen);
-u8 *r8712_get_ie(u8 *pbuf, sint index, sint *len, sint limit);
-unsigned char *r8712_get_wpa_ie(unsigned char *pie, int *rsn_ie_len, int limit);
-unsigned char *r8712_get_wpa2_ie(unsigned char *pie, int *rsn_ie_len,
+u8 *r8712_get_ie(u8 *pbuf, sint index, uint *len, sint limit);
+unsigned char *r8712_get_wpa_ie(unsigned char *pie, uint *rsn_ie_len, int limit);
+unsigned char *r8712_get_wpa2_ie(unsigned char *pie, uint *rsn_ie_len,
 				 int limit);
 int r8712_parse_wpa_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher,
 		       int *pairwise_cipher);

drivers/staging/rtl8712/rtl871x_mlme.c

@@ -1725,7 +1725,8 @@ unsigned int r8712_restructure_ht_ie(struct _adapter *padapter, u8 *in_ie,
 static void update_ht_cap(struct _adapter *padapter, u8 *pie, uint ie_len)
 {
 	u8 *p, max_ampdu_sz;
-	int i, len;
+	int i;
+	uint len;
 	struct sta_info *bmc_sta, *psta;
 	struct ieee80211_ht_cap *pht_capie;
 	struct recv_reorder_ctrl *preorder_ctrl;

drivers/staging/rtl8712/rtl871x_xmit.c

@@ -717,7 +717,7 @@ void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len)
 {
 	uint	protection;
 	u8	*perp;
-	sint	 erp_len;
+	uint	erp_len;
 	struct	xmit_priv *pxmitpriv = &padapter->xmitpriv;
 	struct	registry_priv *pregistrypriv = &padapter->registrypriv;