arch/x86/video/fbdev.c

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