staging: xgifb: delete incorrect I/O mapping

If the PCI device was disabled when the probe() routine started, the
driver will create 256 MB video memory mapping which is never used or
properly released. It's also unsafe as the size is incorrect for many
video cards. Deleting it also allows eliminating XGIvga_enable global
variable.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/xgifb/XGI_main.h

@@ -303,7 +303,6 @@ static u32 pseudo_palette[17];
 static int XGIfb_off = 0;
 static int XGIfb_crt1off = 0;
 static int XGIfb_forcecrt1 = -1;
-static int XGIvga_enabled = 0;
 static int XGIfb_userom = 0;
 //static int XGIfb_useoem = -1;
 

drivers/staging/xgifb/XGI_main_26.c

@@ -2163,7 +2163,6 @@ static unsigned char *xgifb_copy_rom(struct pci_dev *dev)
 static int __devinit xgifb_probe(struct pci_dev *pdev,
 		const struct pci_device_id *ent)
 {
-	u16 reg16;
 	u8 reg, reg1;
 	u8 CR48, CR38;
 	int ret;
@@ -2180,9 +2179,7 @@ static int __devinit xgifb_probe(struct pci_dev *pdev,
 
 	xgi_video_info.chip_id = pdev->device;
 	pci_read_config_byte(pdev, PCI_REVISION_ID, &xgi_video_info.revision_id);
-	pci_read_config_word(pdev, PCI_COMMAND, &reg16);
 	XGIhw_ext.jChipRevision = xgi_video_info.revision_id;
-	XGIvga_enabled = reg16 & 0x01;
 
 	xgi_video_info.pcibus = pdev->bus->number;
 	xgi_video_info.pcislot = PCI_SLOT(pdev->devfn);
@@ -2261,10 +2258,6 @@ static int __devinit xgifb_probe(struct pci_dev *pdev,
 	}
 	XGIhw_ext.pQueryVGAConfigSpace = &XGIfb_query_VGA_config_space;
 
-	if (!XGIvga_enabled) {
-		/* Mapping Max FB Size for 315 Init */
-		XGIhw_ext.pjVideoMemoryAddress = ioremap(xgi_video_info.video_base, 0x10000000);
-	}
 	if (XGIfb_get_dram_size()) {
 		printk(KERN_INFO "XGIfb: Fatal error: Unable to determine RAM size.\n");
 		ret = -ENODEV;