[PATCH v2 5/5] staging: r8188eu: simplify the calculation of ie start offset

[Martin Kaiser <martin@kaiser.cx>]

Use offsetof to calculate the start offset of the information elements in
an association response message. This should make it easier to understand
how the offset is calculated.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
---
v2:
 - rewrite the commit message

 drivers/staging/r8188eu/core/rtw_mlme_ext.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/r8188eu/core/rtw_mlme_ext.c b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
index 10074355b82d..6d3d5ff9a00e 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme_ext.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
@@ -1359,7 +1359,7 @@ unsigned int OnAssocRsp(struct adapter *padapter, struct recv_frame *precv_frame
 	/* following are moved to join event callback function */
 	/* to handle HT, WMM, rate adaptive, update MAC reg */
 	/* for not to handle the synchronous IO in the tasklet */
-	for (i = (6 + WLAN_HDR_A3_LEN); i < pkt_len;) {
+	for (i = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable); i < pkt_len;) {
 		pIE = (struct ndis_802_11_var_ie *)(pframe + i);
 
 		switch (pIE->ElementID) {
-- 
2.30.2