1 files changed, 40 insertions, 0 deletions
diff --git a/arch/x86/video/fbdev.c b/arch/x86/video/fbdev.c
new file mode 100644
index 000000000..9fd24846d
--- /dev/null
+++ b/arch/x86/video/fbdev.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ */
+#include <linux/fb.h>
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/vgaarb.h>
+
+int fb_is_primary_device(struct fb_info *info)
+{
+	struct device *device = info->device;
+	struct pci_dev *default_device = vga_default_device();
+	struct pci_dev *pci_dev;
+	struct resource *res;
+
+	if (!device || !dev_is_pci(device))
+		return 0;
+
+	pci_dev = to_pci_dev(device);
+
+	if (default_device) {
+		if (pci_dev == default_device)
+			return 1;
+		return 0;
+	}
+
+	res = pci_dev->resource + PCI_ROM_RESOURCE;
+
+	if (res->flags & IORESOURCE_ROM_SHADOW)
+		return 1;
+
+	return 0;
+}
+EXPORT_SYMBOL(fb_is_primary_device);
+MODULE_LICENSE("GPL");