From add7d21c79e2bd2012d92bb0043023230ec9aa74 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Fri, 7 Mar 2008 08:56:20 +1000
Subject: drm: fixup for new sysfs API

---
 libdrm/xf86drmMode.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/libdrm/xf86drmMode.c b/libdrm/xf86drmMode.c
index 07b14dbf..f86cc48f 100644
--- a/libdrm/xf86drmMode.c
+++ b/libdrm/xf86drmMode.c
@@ -568,6 +568,25 @@ int drmCheckModesettingSupported(const char *busid)
 	if (ret != 4)
 		return -EINVAL;
 
+	sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/drm",
+		domain, bus, dev, func);
+
+	sysdir = opendir(pci_dev_dir);
+	if (sysdir) {
+		dent = readdir(sysdir);
+		while (dent) {
+			if (!strncmp(dent->d_name, "controlD", 8)) {
+				found = 1;
+				break;
+			}
+		
+			dent = readdir(sysdir);
+		}
+		closedir(sysdir);
+		if (found)
+			return 0;
+	}
+
 	sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/",
 		domain, bus, dev, func);
 
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