On Wed, 2009-12-02 at 20:14 -0800, John Daiker wrote:
> This patches eliminates a few double semicolons in the IWMC3200 driver.
How about this instead:
Avoid an offset calculation for each management frame.
Determine the offset at compile time.
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
drivers/net/wireless/iwmc3200wifi/rx.c | 25 ++++++++++++-------------
1 files changed, 12 insertions(+), 13 deletions(-)
diff --git a/drivers/net/wireless/iwmc3200wifi/rx.c b/drivers/net/wireless/iwmc3200wifi/rx.c
index bdb1d7e..097144a 100644
--- a/drivers/net/wireless/iwmc3200wifi/rx.c
+++ b/drivers/net/wireless/iwmc3200wifi/rx.c
@@ -868,36 +868,35 @@ static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
struct iwm_umac_notif_mgt_frame *mgt_frame =
(struct iwm_umac_notif_mgt_frame *)buf;
struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
- u8 *ie;
IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
le16_to_cpu(mgt_frame->len));
if (ieee80211_is_assoc_req(mgt->frame_control)) {
- ie = mgt->u.assoc_req.variable;;
- iwm->req_ie_len =
- le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
+ iwm->req_ie_len = le16_to_cpu(mgt_frame->len)
+ - offsetof(struct ieee80211_mgmt,
+ u.assoc_req.variable);
kfree(iwm->req_ie);
iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
iwm->req_ie_len, GFP_KERNEL);
} else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
- ie = mgt->u.reassoc_req.variable;;
- iwm->req_ie_len =
- le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
+ iwm->req_ie_len = le16_to_cpu(mgt_frame->len)
+ - offsetof(struct ieee80211_mgmt,
+ u.reassoc_req.variable);
kfree(iwm->req_ie);
iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
iwm->req_ie_len, GFP_KERNEL);
} else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
- ie = mgt->u.assoc_resp.variable;;
- iwm->resp_ie_len =
- le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
+ iwm->resp_ie_len = le16_to_cpu(mgt_frame->len)
+ - offsetof(struct ieee80211_mgmt,
+ u.assoc_resp.variable);
kfree(iwm->resp_ie);
iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
iwm->resp_ie_len, GFP_KERNEL);
} else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
- ie = mgt->u.reassoc_resp.variable;;
- iwm->resp_ie_len =
- le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
+ iwm->resp_ie_len = le16_to_cpu(mgt_frame->len)
+ - offsetof(struct ieee80211_mgmt,
+ u.reassoc_resp.variable);
kfree(iwm->resp_ie);
iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
iwm->resp_ie_len, GFP_KERNEL);
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
