staging: vt6656: rxtx.c create structure to join vnt_tx_data_head with vnt_tx_head.

Create struct vnt_tx_mic_hdr for with union vnt_tx_data_head
for mic mode.

Create union vnt_tx for mic and non mic mode.

Attach vnt_rrv_time_* to relevant tx_head.

Signed-off-by: Malcolm Priestley <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/vt6656/rxtx.c

···
     if (byPktType == PK_TYPE_11GB || byPktType == PK_TYPE_11GA) {
 	if (need_rts) {
             //Fill RsvTime
-		struct vnt_rrv_time_rts *pBuf = &tx_buffer->tx_head.rts;
+		struct vnt_rrv_time_rts *pBuf = &tx_buffer->tx_head.tx_rts.rts;
 
 		pBuf->wRTSTxRrvTime_aa = s_uGetRTSCTSRsvTime(pDevice, 2,
 				byPktType, cbFrameSize, wCurrentRate);
···
         }
         else {//RTS_needless, PCF mode
             //Fill RsvTime
-		struct vnt_rrv_time_cts *pBuf = &tx_buffer->tx_head.cts;
+		struct vnt_rrv_time_cts *pBuf = &tx_buffer->tx_head.tx_cts.cts;
 
 		pBuf->wTxRrvTime_a = vnt_rxtx_rsvtime_le16(pDevice, byPktType,
 			cbFrameSize, wCurrentRate, bNeedACK);
···
     else if (byPktType == PK_TYPE_11A) {
 	if (need_rts) {
             //Fill RsvTime
-		struct vnt_rrv_time_ab *pBuf = &tx_buffer->tx_head.ab;
+		struct vnt_rrv_time_ab *pBuf = &tx_buffer->tx_head.tx_ab.ab;
 
 		pBuf->wRTSTxRrvTime = s_uGetRTSCTSRsvTime(pDevice, 2,
 				byPktType, cbFrameSize, wCurrentRate);
···
 			bNeedACK, psEthHeader, wCurrentRate, byFBOption);
 	} else {
             //Fill RsvTime
-		struct vnt_rrv_time_ab *pBuf = &tx_buffer->tx_head.ab;
+		struct vnt_rrv_time_ab *pBuf = &tx_buffer->tx_head.tx_ab.ab;
 
 		pBuf->wTxRrvTime = vnt_rxtx_rsvtime_le16(pDevice, PK_TYPE_11A,
 			cbFrameSize, wCurrentRate, bNeedACK);
···
     else if (byPktType == PK_TYPE_11B) {
 	if (need_rts) {
             //Fill RsvTime
-		struct vnt_rrv_time_ab *pBuf = &tx_buffer->tx_head.ab;
+		struct vnt_rrv_time_ab *pBuf = &tx_buffer->tx_head.tx_ab.ab;
 
 		pBuf->wRTSTxRrvTime = s_uGetRTSCTSRsvTime(pDevice, 0,
 				byPktType, cbFrameSize, wCurrentRate);
···
         }
         else { //RTS_needless, non PCF mode
             //Fill RsvTime
-		struct vnt_rrv_time_ab *pBuf = &tx_buffer->tx_head.ab;
+		struct vnt_rrv_time_ab *pBuf = &tx_buffer->tx_head.tx_ab.ab;
 
 		pBuf->wTxRrvTime = vnt_rxtx_rsvtime_le16(pDevice, PK_TYPE_11B,
 			cbFrameSize, wCurrentRate, bNeedACK);

drivers/staging/vt6656/rxtx.h

···
 	struct vnt_cts_fb cts_g_fb;
 };
 
+struct vnt_tx_mic_hdr {
+	struct vnt_mic_hdr hdr;
+	union vnt_tx_data_head head;
+} __packed;
+
+union vnt_tx {
+	struct vnt_tx_mic_hdr mic;
+	union vnt_tx_data_head head;
+};
+
 union vnt_tx_head {
-	struct vnt_rrv_time_rts rts;
-	struct vnt_rrv_time_cts cts;
-	struct vnt_rrv_time_ab ab;
+	struct {
+		struct vnt_rrv_time_rts rts;
+		union vnt_tx tx;
+	} __packed tx_rts;
+	struct {
+		struct vnt_rrv_time_cts cts;
+		union vnt_tx tx;
+	} __packed tx_cts;
+	struct {
+		struct vnt_rrv_time_ab ab;
+		union vnt_tx tx;
+	} __packed tx_ab;
 };
 
 struct vnt_tx_fifo_head {