staging: rtl8723bs: Remove set but not used variable 'prwskeylen'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/staging/rtl8723bs/core/rtw_security.c: In function rtw_tkip_encrypt:
drivers/staging/rtl8723bs/core/rtw_security.c:660:6: warning: variable prwskeylen set but not used [-Wunused-but-set-variable]
drivers/staging/rtl8723bs/core/rtw_security.c: In function rtw_tkip_decrypt:
drivers/staging/rtl8723bs/core/rtw_security.c:768:6: warning: variable prwskeylen set but not used [-Wunused-but-set-variable]
drivers/staging/rtl8723bs/core/rtw_security.c: In function rtw_aes_encrypt:
drivers/staging/rtl8723bs/core/rtw_security.c:1528:6: warning: variable prwskeylen set but not used [-Wunused-but-set-variable]

It is not used since commit 554c0a3abf21 ("staging:
Add rtl8723bs sdio wifi driver")

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Link: https://lore.kernel.org/r/1570352999-45790-4-git-send-email-zhengbin13@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rtl8723bs/core/rtw_security.c b/drivers/staging/rtl8723bs/core/rtw_security.c
index 5ffaf9bfa6e88d4b5c0f2385f354bb6dab2c4736..ed1d854998581d08050399db3d9c62e6d2603819 100644 (file)
--- a/drivers/staging/rtl8723bs/core/rtw_security.c
+++ b/drivers/staging/rtl8723bs/core/rtw_security.c
@@ -656,7 +656,6 @@ u32 rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe)
        u8   hw_hdr_offset = 0;
        struct arc4context mycontext;
        sint                    curfragnum, length;
-       u32 prwskeylen;
 
        u8 *pframe, *payload, *iv, *prwskey;
        union pn48 dot11txpn;
@@ -703,8 +702,6 @@ u32 rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe)
                                /* prwskey =&stainfo->dot118021x_UncstKey.skey[0]; */
                                prwskey = pattrib->dot118021x_UncstKey.skey;
 
-                       prwskeylen = 16;
-
                        for (curfragnum = 0; curfragnum < pattrib->nr_frags; curfragnum++) {
                                iv = pframe+pattrib->hdrlen;
                                payload = pframe+pattrib->iv_len+pattrib->hdrlen;
@@ -764,7 +761,6 @@ u32 rtw_tkip_decrypt(struct adapter *padapter, u8 *precvframe)
        u8 crc[4];
        struct arc4context mycontext;
        sint                    length;
-       u32 prwskeylen;
 
        u8 *pframe, *payload, *iv, *prwskey;
        union pn48 dot11txpn;
@@ -819,10 +815,8 @@ u32 rtw_tkip_decrypt(struct adapter *padapter, u8 *precvframe)
                                /* DBG_871X("rx bc/mc packets, to perform sw rtw_tkip_decrypt\n"); */
                                /* prwskey = psecuritypriv->dot118021XGrpKey[psecuritypriv->dot118021XGrpKeyid].skey; */
                                prwskey = psecuritypriv->dot118021XGrpKey[prxattrib->key_index].skey;
-                               prwskeylen = 16;
                        } else {
                                prwskey = &stainfo->dot118021x_UncstKey.skey[0];
-                               prwskeylen = 16;
                        }
 
                        iv = pframe+prxattrib->hdrlen;
@@ -1524,7 +1518,6 @@ u32 rtw_aes_encrypt(struct adapter *padapter, u8 *pxmitframe)
 
        /* Intermediate Buffers */
        sint    curfragnum, length;
-       u32 prwskeylen;
        u8 *pframe, *prwskey;   /*  *payload,*iv */
        u8   hw_hdr_offset = 0;
        /* struct       sta_info        *stainfo = NULL; */
@@ -1551,8 +1544,6 @@ u32 rtw_aes_encrypt(struct adapter *padapter, u8 *pxmitframe)
                        /* prwskey =&stainfo->dot118021x_UncstKey.skey[0]; */
                        prwskey = pattrib->dot118021x_UncstKey.skey;
 
-               prwskeylen = 16;
-
                for (curfragnum = 0; curfragnum < pattrib->nr_frags; curfragnum++) {
                        if ((curfragnum+1) == pattrib->nr_frags) {      /* 4 the last fragment */
                                length = pattrib->last_txcmdsz-pattrib->hdrlen-pattrib->iv_len-pattrib->icv_len;