arkfb: Compute VGA base iomem pointer explicitly.

This allows the driver to work in multi-domain PCI
configurations.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/drivers/video/arkfb.c b/drivers/video/arkfb.c
index 1c69db3..8686429 100644 (file)
--- a/drivers/video/arkfb.c
+++ b/drivers/video/arkfb.c
@@ -951,6 +951,8 @@ static struct fb_ops arkfb_ops = {
 /* PCI probe */
 static int __devinit ark_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 {
+       struct pci_bus_region bus_reg;
+       struct resource vga_res;
        struct fb_info *info;
        struct arkfb_info *par;
        int rc;
@@ -1006,6 +1008,15 @@ static int __devinit ark_pci_probe(struct pci_dev *dev, const struct pci_device_
                goto err_iomap;
        }
 
+       bus_reg.start = 0;
+       bus_reg.end = 64 * 1024;
+
+       vga_res.flags = IORESOURCE_IO;
+
+       pcibios_bus_to_resource(dev, &vga_res, &bus_reg);
+
+       par->state.vgabase = (void __iomem *) vga_res.start;
+
        /* FIXME get memsize */
        regval = vga_rseq(par->state.vgabase, 0x10);
        info->screen_size = (1 << (regval >> 6)) << 20;