staging/xgifb: remove unnecessary temp variable in XGIfb_mode_rate_to_ddata

Instead of subtracting one and then assign a different name and add 1
again we simply use HDE directly. HDE wasn't used directly before, so no
change in functionality.
Same applies to VDE.

-> now we can remove the variable with the very descriptive name E ;)

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/xgifb/XGI_main_26.c b/drivers/staging/xgifb/XGI_main_26.c
index 840b497..387d1bd 100644 (file)
--- a/drivers/staging/xgifb/XGI_main_26.c
+++ b/drivers/staging/xgifb/XGI_main_26.c
@@ -94,7 +94,7 @@ static int XGIfb_mode_rate_to_ddata(struct vb_device_info *XGI_Pr,
        unsigned short VRE, VBE, VRS, VDE;
        unsigned short HRE, HBE, HRS, HDE;
        unsigned char sr_data, cr_data, cr_data2;
-       int B, C, D, E, F, temp, j;
+       int B, C, D, F, temp, j;
        InitTo330Pointer(HwDeviceExtension->jChipType, XGI_Pr);
        if (!XGI_SearchModeID(ModeNo, &ModeIdIndex, XGI_Pr))
                return 0;
@@ -104,14 +104,13 @@ static int XGIfb_mode_rate_to_ddata(struct vb_device_info *XGI_Pr,
 
        sr_data = XGI_CRT1Table[index].CR[5];
 
-       HDE = (XGI330_RefIndex[RefreshRateTableIndex].XRes >> 3) - 1;
-       E = HDE + 1;
+       HDE = (XGI330_RefIndex[RefreshRateTableIndex].XRes >> 3);
 
        cr_data = XGI_CRT1Table[index].CR[3];
 
        /* Horizontal retrace (=sync) start */
        HRS = (cr_data & 0xff) | ((unsigned short) (sr_data & 0xC0) << 2);
-       F = HRS - E - 3;
+       F = HRS - HDE - 3;
 
        sr_data = XGI_CRT1Table[index].CR[6];
 
@@ -126,10 +125,10 @@ static int XGIfb_mode_rate_to_ddata(struct vb_device_info *XGI_Pr,
        /* Horizontal retrace (=sync) end */
        HRE = (cr_data2 & 0x1f) | ((sr_data & 0x04) << 3);
 
-       temp = HBE - ((E - 1) & 255);
+       temp = HBE - ((HDE - 1) & 255);
        B = (temp > 0) ? temp : (temp + 256);
 
-       temp = HRE - ((E + F + 3) & 63);
+       temp = HRE - ((HDE + F + 3) & 63);
        C = (temp > 0) ? temp : (temp + 64);
 
        D = B - F - C;
@@ -142,8 +141,7 @@ static int XGIfb_mode_rate_to_ddata(struct vb_device_info *XGI_Pr,
 
        cr_data2 = XGI_CRT1Table[index].CR[9];
 
-       VDE = XGI330_RefIndex[RefreshRateTableIndex].YRes - 1;
-       E = VDE + 1;
+       VDE = XGI330_RefIndex[RefreshRateTableIndex].YRes;
 
        cr_data = XGI_CRT1Table[index].CR[10];
 
@@ -151,20 +149,20 @@ static int XGIfb_mode_rate_to_ddata(struct vb_device_info *XGI_Pr,
        VRS = (cr_data & 0xff) | ((unsigned short) (cr_data2 & 0x04) << 6)
                        | ((unsigned short) (cr_data2 & 0x80) << 2)
                        | ((unsigned short) (sr_data & 0x08) << 7);
-       F = VRS + 1 - E;
+       F = VRS + 1 - VDE;
 
        cr_data = XGI_CRT1Table[index].CR[13];
 
        /* Vertical blank end */
        VBE = (cr_data & 0xff) | ((unsigned short) (sr_data & 0x10) << 4);
-       temp = VBE - ((E - 1) & 511);
+       temp = VBE - ((VDE - 1) & 511);
        B = (temp > 0) ? temp : (temp + 512);
 
        cr_data = XGI_CRT1Table[index].CR[11];
 
        /* Vertical retrace (=sync) end */
        VRE = (cr_data & 0x0f) | ((sr_data & 0x20) >> 1);
-       temp = VRE - ((E + F - 1) & 31);
+       temp = VRE - ((VDE + F - 1) & 31);
        C = (temp > 0) ? temp : (temp + 32);
 
        D = B - F - C;