1 files changed, 10 insertions, 2 deletions

diff --git a/sys/compat/linux/linux_util.c b/sys/compat/linux/linux_util.c
index 466c588157c5..61be7b9ab87e 100644
--- a/sys/compat/linux/linux_util.c
+++ b/sys/compat/linux/linux_util.c
@@ -127,14 +127,13 @@ int
 linux_driver_get_major_minor(const char *node, int *major, int *minor)
 {
 	struct device_element *de;
+	unsigned long devno;
 
 	if (node == NULL || major == NULL || minor == NULL)
 		return 1;
 
 	if (strlen(node) > strlen("pts/") &&
 	    strncmp(node, "pts/", strlen("pts/")) == 0) {
-		unsigned long devno;
-
 		/*
 		 * Linux checks major and minors of the slave device
 		 * to make sure it's a pty device, so let's make him
@@ -147,6 +146,15 @@ linux_driver_get_major_minor(const char *node, int *major, int *minor)
 		return (0);
 	}
 
+	if ((strlen(node) > strlen("drm/") &&
+	    strncmp(node, "drm/", strlen("drm/")) == 0) ) {
+		devno = strtoul(node + strlen("drm/"), NULL, 10);
+		*major = 226 + (devno / 256);
+		*minor = devno % 256;
+		return (0);
+	}
+
+
 	TAILQ_FOREACH(de, &devices, list) {
 		if (strcmp(node, de->entry.bsd_device_name) == 0) {
 			*major = de->entry.linux_major;