staging: xgifb: inline XGIfb_query_VGA_config_space()

XGIfb_query_VGA_config_space() is used only once during the init and
can be replaced with a single PCI configuration space read.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/xgifb/XGI_main_26.c

@@ -387,44 +387,6 @@ static void XGIRegInit(struct vb_device_info *XGI_Pr, unsigned long BaseAddr)
 
 }
 
-/* ------------ Interface for init & mode switching code ------------- */
-
-static unsigned char XGIfb_query_VGA_config_space(
-		struct xgi_hw_device_info *pXGIhw_ext, unsigned long offset,
-		unsigned long set, unsigned long *value)
-{
-	static struct pci_dev *pdev;
-	static unsigned char init, valid_pdev;
-
-	if (!set)
-		DPRINTK("XGIfb: Get VGA offset 0x%lx\n", offset);
-	else
-		DPRINTK("XGIfb: Set offset 0x%lx to 0x%lx\n", offset, *value);
-
-	if (!init) {
-		init = 1;
-		pdev = pci_get_device(PCI_VENDOR_ID_XG, xgi_video_info.chip_id,
-				pdev);
-		if (pdev) {
-			valid_pdev = 1;
-			pci_dev_put(pdev);
-		}
-	}
-
-	if (!valid_pdev) {
-		printk(KERN_DEBUG "XGIfb: Can't find XGI %d VGA device.\n",
-				xgi_video_info.chip_id);
-		return 0;
-	}
-
-	if (set == 0)
-		pci_read_config_dword(pdev, offset, (u32 *) value);
-	else
-		pci_write_config_dword(pdev, offset, (u32)(*value));
-
-	return 1;
-}
-
 /* ------------------ Internal helper routines ----------------- */
 
 static int XGIfb_GetXG21DefaultLVDSModeIdx(void)
@@ -2078,7 +2040,6 @@ static int __devinit xgifb_probe(struct pci_dev *pdev,
 		hw_info->pjVirtualRomBase = NULL;
 		printk(KERN_INFO "XGIfb: Video ROM usage disabled\n");
 	}
-	hw_info->pQueryVGAConfigSpace = &XGIfb_query_VGA_config_space;
 
 	if (XGIfb_get_dram_size()) {
 		printk(KERN_INFO "XGIfb: Fatal error: Unable to determine RAM size.\n");
@@ -2128,7 +2089,8 @@ static int __devinit xgifb_probe(struct pci_dev *pdev,
 	       xgi_video_info.mmio_base, xgi_video_info.mmio_vbase,
 	       xgi_video_info.mmio_size / 1024);
 	printk("XGIfb: XGIInitNew() ...");
-	if (XGIInitNew(hw_info))
+	pci_set_drvdata(pdev, &xgi_video_info);
+	if (XGIInitNew(pdev))
 		printk("OK\n");
 	else
 		printk("Fail\n");
@@ -2419,8 +2381,6 @@ static int __devinit xgifb_probe(struct pci_dev *pdev,
 		goto error_mtrr;
 	}
 
-	pci_set_drvdata(pdev, &xgi_video_info);
-
 	dumpVGAReg();
 
 	return 0;

drivers/staging/xgifb/vb_init.c

 #include <linux/types.h>
 #include <linux/delay.h> /* udelay */
+#include <linux/pci.h>
+
 #include "vgatypes.h"
 #include "XGIfb.h"
 
@@ -1427,8 +1429,10 @@ static unsigned char GetXG27FPBits(struct vb_device_info *pVBInfo)
 	return temp;
 }
 
-unsigned char XGIInitNew(struct xgi_hw_device_info *HwDeviceExtension)
+unsigned char XGIInitNew(struct pci_dev *pdev)
 {
+	struct video_info *xgifb_info = pci_get_drvdata(pdev);
+	struct xgi_hw_device_info *HwDeviceExtension = &xgifb_info->hw_info;
 	struct vb_device_info VBINF;
 	struct vb_device_info *pVBInfo = &VBINF;
 	unsigned char i, temp = 0, temp1;
@@ -1437,8 +1441,6 @@ unsigned char XGIInitNew(struct xgi_hw_device_info *HwDeviceExtension)
 
 	/* unsigned long j, k; */
 
-	unsigned long Temp;
-
 	pVBInfo->ROMAddr = HwDeviceExtension->pjVirtualRomBase;
 
 	pVBInfo->FBAddr = HwDeviceExtension->pjVideoMemoryAddress;
@@ -1578,6 +1580,8 @@ unsigned char XGIInitNew(struct xgi_hw_device_info *HwDeviceExtension)
 	printk("12");
 
 	if (HwDeviceExtension->jChipType < XG20) { /* kuku 2004/06/25 */
+		u32 Temp;
+
 		/* Set AGP Rate */
 		/*
 		temp1 = xgifb_reg_get(pVBInfo->P3c4, 0x3B);
@@ -1644,10 +1648,7 @@ unsigned char XGIInitNew(struct xgi_hw_device_info *HwDeviceExtension)
 		/*        if (ChipsetID == 0x25308086) */
 		/*            xgifb_reg_set(pVBInfo->P3d4, 0x77, 0xF0); */
 
-		HwDeviceExtension->pQueryVGAConfigSpace(HwDeviceExtension,
-							0x50,
-							0,
-							&Temp); /* Get */
+		pci_read_config_dword(pdev, 0x50, &Temp);
 		Temp >>= 20;
 		Temp &= 0xF;
 

drivers/staging/xgifb/vb_init.h

 #ifndef _VBINIT_
 #define _VBINIT_
-extern unsigned char XGIInitNew(struct xgi_hw_device_info *HwDeviceExtension);
+extern unsigned char XGIInitNew(struct pci_dev *pdev);
 extern struct XGI21_LVDSCapStruct  XGI21_LCDCapList[13];
 #endif
 

drivers/staging/xgifb/vgatypes.h

@@ -73,10 +73,6 @@ struct xgi_hw_device_info {
 				  /* "XGI_VB_CHIP_TYPE" */
 
 	unsigned long ulCRT2LCDType; /* defined in the data structure type */
-
-	unsigned char(*pQueryVGAConfigSpace)(struct xgi_hw_device_info *,
-					    unsigned long, unsigned long,
-					    unsigned long *);
 };
 
 /* Additional IOCTL for communication xgifb <> X driver        */