staging: vt6656: rxtx.c: s_uGetDataDuration remove First Frag or Mid Frag dead code.
The driver always calls s_uGetDataDuration with;
uFragIdx = 0, cbLastFragmentSize = 0 and uMACfragNum = 1
uFragIdx == (uMACfragNum-1) is always true and bLastFrag = 1.
Remove dead First Frag or Mid Frag if/else and variables.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/vt6656/rxtx.c b/drivers/staging/vt6656/rxtx.c
index 1d58d1f..b0354e5 100644
--- a/drivers/staging/vt6656/rxtx.c
+++ b/drivers/staging/vt6656/rxtx.c
@@ -392,147 +392,44 @@
u32 uFragIdx, u32 cbLastFragmentSize, u32 uMACfragNum,
u8 byFBOption)
{
- int bLastFrag = 0;
- u32 uAckTime = 0, uNextPktTime = 0;
-
- if (uFragIdx == (uMACfragNum-1)) {
- bLastFrag = 1;
- }
+ u32 uAckTime = 0;
switch (byDurType) {
case DATADUR_B: //DATADUR_B
- if (((uMACfragNum == 1)) || (bLastFrag == 1)) {//Non Frag or Last Frag
if (bNeedAck) {
uAckTime = BBuGetFrameTime(pDevice->byPreambleType, byPktType, 14, pDevice->byTopCCKBasicRate);
return (pDevice->uSIFS + uAckTime);
} else {
return 0;
}
- }
- else {//First Frag or Mid Frag
- if (uFragIdx == (uMACfragNum-2)) {
- uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType, cbLastFragmentSize, wRate, bNeedAck);
- } else {
- uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, wRate, bNeedAck);
- }
- if (bNeedAck) {
- uAckTime = BBuGetFrameTime(pDevice->byPreambleType, byPktType, 14, pDevice->byTopCCKBasicRate);
- return (pDevice->uSIFS + uAckTime + uNextPktTime);
- } else {
- return (pDevice->uSIFS + uNextPktTime);
- }
- }
break;
case DATADUR_A: //DATADUR_A
- if (((uMACfragNum==1)) || (bLastFrag==1)) {//Non Frag or Last Frag
if(bNeedAck){
uAckTime = BBuGetFrameTime(pDevice->byPreambleType, byPktType, 14, pDevice->byTopOFDMBasicRate);
return (pDevice->uSIFS + uAckTime);
} else {
return 0;
}
- }
- else {//First Frag or Mid Frag
- if(uFragIdx == (uMACfragNum-2)){
- uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType, cbLastFragmentSize, wRate, bNeedAck);
- } else {
- uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, wRate, bNeedAck);
- }
- if(bNeedAck){
- uAckTime = BBuGetFrameTime(pDevice->byPreambleType, byPktType, 14, pDevice->byTopOFDMBasicRate);
- return (pDevice->uSIFS + uAckTime + uNextPktTime);
- } else {
- return (pDevice->uSIFS + uNextPktTime);
- }
- }
break;
case DATADUR_A_F0: //DATADUR_A_F0
- if (((uMACfragNum==1)) || (bLastFrag==1)) {//Non Frag or Last Frag
if(bNeedAck){
uAckTime = BBuGetFrameTime(pDevice->byPreambleType, byPktType, 14, pDevice->byTopOFDMBasicRate);
return (pDevice->uSIFS + uAckTime);
} else {
return 0;
}
- }
- else { //First Frag or Mid Frag
- if (byFBOption == AUTO_FB_0) {
- if (wRate < RATE_18M)
- wRate = RATE_18M;
- else if (wRate > RATE_54M)
- wRate = RATE_54M;
-
- if(uFragIdx == (uMACfragNum-2)){
- uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType, cbLastFragmentSize, wFB_Opt0[FB_RATE0][wRate-RATE_18M], bNeedAck);
- } else {
- uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, wFB_Opt0[FB_RATE0][wRate-RATE_18M], bNeedAck);
- }
- } else { // (byFBOption == AUTO_FB_1)
- if (wRate < RATE_18M)
- wRate = RATE_18M;
- else if (wRate > RATE_54M)
- wRate = RATE_54M;
-
- if(uFragIdx == (uMACfragNum-2)){
- uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType, cbLastFragmentSize, wFB_Opt1[FB_RATE0][wRate-RATE_18M], bNeedAck);
- } else {
- uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, wFB_Opt1[FB_RATE0][wRate-RATE_18M], bNeedAck);
- }
- }
-
- if(bNeedAck){
- uAckTime = BBuGetFrameTime(pDevice->byPreambleType, byPktType, 14, pDevice->byTopOFDMBasicRate);
- return (pDevice->uSIFS + uAckTime + uNextPktTime);
- } else {
- return (pDevice->uSIFS + uNextPktTime);
- }
- }
break;
case DATADUR_A_F1: //DATADUR_A_F1
- if (((uMACfragNum==1)) || (bLastFrag==1)) {//Non Frag or Last Frag
if(bNeedAck){
uAckTime = BBuGetFrameTime(pDevice->byPreambleType, byPktType, 14, pDevice->byTopOFDMBasicRate);
return (pDevice->uSIFS + uAckTime);
} else {
return 0;
}
- }
- else { //First Frag or Mid Frag
- if (byFBOption == AUTO_FB_0) {
- if (wRate < RATE_18M)
- wRate = RATE_18M;
- else if (wRate > RATE_54M)
- wRate = RATE_54M;
-
- if(uFragIdx == (uMACfragNum-2)){
- uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType, cbLastFragmentSize, wFB_Opt0[FB_RATE1][wRate-RATE_18M], bNeedAck);
- } else {
- uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, wFB_Opt0[FB_RATE1][wRate-RATE_18M], bNeedAck);
- }
-
- } else { // (byFBOption == AUTO_FB_1)
- if (wRate < RATE_18M)
- wRate = RATE_18M;
- else if (wRate > RATE_54M)
- wRate = RATE_54M;
-
- if(uFragIdx == (uMACfragNum-2)){
- uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType, cbLastFragmentSize, wFB_Opt1[FB_RATE1][wRate-RATE_18M], bNeedAck);
- } else {
- uNextPktTime = s_uGetTxRsvTime(pDevice, byPktType, cbFrameLength, wFB_Opt1[FB_RATE1][wRate-RATE_18M], bNeedAck);
- }
- }
- if(bNeedAck){
- uAckTime = BBuGetFrameTime(pDevice->byPreambleType, byPktType, 14, pDevice->byTopOFDMBasicRate);
- return (pDevice->uSIFS + uAckTime + uNextPktTime);
- } else {
- return (pDevice->uSIFS + uNextPktTime);
- }
- }
break;
default: