wpa_ie_len and copy_len variables never take negative values and are used to 
indicate the length of the string, so more suitable for them size_t type.

Signed-off-by: Ivan Safonov <insafo...@gmail.com>
---
Changes in v2:
  - big patchset splitted into some small independent patches.
  - before replacing (?:) to macro min variables given to the appropriate type.

 drivers/staging/rtl8188eu/core/rtw_mlme_ext.c  | 3 ++-
 drivers/staging/rtl8188eu/os_dep/ioctl_linux.c | 4 ++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c 
b/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
index e15c198..61d0501 100644
--- a/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
+++ b/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
@@ -3003,7 +3003,8 @@ static unsigned int OnAssocReq(struct adapter *padapter,
        struct sta_info *pstat;
        unsigned char           reassoc, *p, *pos, *wpa_ie;
        unsigned char WMM_IE[] = {0x00, 0x50, 0xf2, 0x02, 0x00, 0x01};
-       int             i, ie_len, wpa_ie_len, left;
+       int             i, ie_len, left;
+       size_t wpa_ie_len;
        unsigned char           supportRate[16];
        int                                     supportRateNum;
        unsigned short          status = _STATS_SUCCESSFUL_;
diff --git a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c 
b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
index 9695749..71872a6 100644
--- a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
@@ -2665,8 +2665,8 @@ static int rtw_get_sta_wpaie(struct net_device *dev, 
struct ieee_param *param)
        if (psta) {
                if (psta->wpa_ie[0] == WLAN_EID_RSN ||
                    psta->wpa_ie[0] == WLAN_EID_VENDOR_SPECIFIC) {
-                       int wpa_ie_len;
-                       int copy_len;
+                       size_t wpa_ie_len;
+                       size_t copy_len;
 
                        wpa_ie_len = psta->wpa_ie[1];
                        copy_len = ((wpa_ie_len+2) > sizeof(psta->wpa_ie)) ? 
(sizeof(psta->wpa_ie)) : (wpa_ie_len+2);
-- 
2.4.10

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