arch/x86/video/fbdev.c

   1 /*
   2  * Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com>
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file COPYING in the main directory of this archive
   6  * for more details.
   7  *
   8  */
   9 #include <linux/fb.h>
  10 #include <linux/pci.h>
  11
  12 int fb_is_primary_device(struct fb_info *info)
  13 {
  14         struct device *device = info->device;
  15         struct pci_dev *pci_dev = NULL;
  16         struct resource *res = NULL;
  17         int retval = 0;
  18
  19         if (device)
  20                 pci_dev = to_pci_dev(device);
  21
  22         if (pci_dev)
  23                 res = &pci_dev->resource[PCI_ROM_RESOURCE];
  24
  25         if (res && res->flags & IORESOURCE_ROM_SHADOW)
  26                 retval = 1;
  27
  28         return retval;
  29 }
  30 EXPORT_SYMBOL(fb_is_primary_device);
  31 MODULE_LICENSE("GPL");