staging/xgifb: Remove unused variables and dead assignments

The variables A,HBS and VBS are never read in XGIfb_mode_rate_to_ddata
and the assignment has no side effects -> so we can simply remove them.
Removing them causes VT, HT and cr_data3 to be unused -> remove them as well
and remove the assignmens to cr_data which are shadowed by a different
assignment a few lines later.

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 68a216f..ca9f583 100644 (file)
--- a/drivers/staging/xgifb/XGI_main_26.c
+++ b/drivers/staging/xgifb/XGI_main_26.c
@@ -91,11 +91,10 @@ static int XGIfb_mode_rate_to_ddata(struct vb_device_info *XGI_Pr,
        unsigned short ModeIdIndex, index = 0;
        unsigned short RefreshRateTableIndex = 0;
 
-       unsigned short VRE, VBE, VRS, VBS, VDE, VT;
-       unsigned short HRE, HBE, HRS, HBS, HDE, HT;
+       unsigned short VRE, VBE, VRS, VDE;
+       unsigned short HRE, HBE, HRS, HDE;
        unsigned char sr_data, cr_data, cr_data2;
-       unsigned long cr_data3;
-       int A, B, C, D, E, F, temp, j;
+       int B, C, D, E, F, temp, j;
        InitTo330Pointer(HwDeviceExtension->jChipType, XGI_Pr);
        if (!XGI_SearchModeID(ModeNo, &ModeIdIndex, XGI_Pr))
                return 0;
@@ -105,12 +104,6 @@ static int XGIfb_mode_rate_to_ddata(struct vb_device_info *XGI_Pr,
 
        sr_data = XGI_CRT1Table[index].CR[5];
 
-       cr_data = XGI_CRT1Table[index].CR[0];
-
-       /* Horizontal total */
-       HT = (cr_data & 0xff) | ((unsigned short) (sr_data & 0x03) << 8);
-       A = HT + 5;
-
        HDE = (XGI330_RefIndex[RefreshRateTableIndex].XRes >> 3) - 1;
        E = HDE + 1;
 
@@ -120,11 +113,6 @@ static int XGIfb_mode_rate_to_ddata(struct vb_device_info *XGI_Pr,
        HRS = (cr_data & 0xff) | ((unsigned short) (sr_data & 0xC0) << 2);
        F = HRS - E - 3;
 
-       cr_data = XGI_CRT1Table[index].CR[1];
-
-       /* Horizontal blank start */
-       HBS = (cr_data & 0xff) | ((unsigned short) (sr_data & 0x30) << 4);
-
        sr_data = XGI_CRT1Table[index].CR[6];
 
        cr_data = XGI_CRT1Table[index].CR[2];
@@ -152,16 +140,8 @@ static int XGIfb_mode_rate_to_ddata(struct vb_device_info *XGI_Pr,
 
        sr_data = XGI_CRT1Table[index].CR[14];
 
-       cr_data = XGI_CRT1Table[index].CR[8];
-
        cr_data2 = XGI_CRT1Table[index].CR[9];
 
-       /* Vertical total */
-       VT = (cr_data & 0xFF) | ((unsigned short) (cr_data2 & 0x01) << 8)
-                       | ((unsigned short) (cr_data2 & 0x20) << 4)
-                       | ((unsigned short) (sr_data & 0x01) << 10);
-       A = VT + 2;
-
        VDE = XGI330_RefIndex[RefreshRateTableIndex].YRes - 1;
        E = VDE + 1;
 
@@ -173,15 +153,6 @@ static int XGIfb_mode_rate_to_ddata(struct vb_device_info *XGI_Pr,
                        | ((unsigned short) (sr_data & 0x08) << 7);
        F = VRS + 1 - E;
 
-       cr_data = XGI_CRT1Table[index].CR[12];
-
-       cr_data3 = (XGI_CRT1Table[index].CR[14] & 0x80) << 5;
-
-       /* Vertical blank start */
-       VBS = (cr_data & 0xff) | ((unsigned short) (cr_data2 & 0x08) << 5)
-                       | ((unsigned short) (cr_data3 & 0x20) << 4)
-                       | ((unsigned short) (sr_data & 0x04) << 8);
-
        cr_data = XGI_CRT1Table[index].CR[13];
 
        /* Vertical blank end */