[PATCH] don't wait for sysfs if the kernel(2.6.10-rc2) tells us what not to expect

Newer kernels will tell us if we should wait for the "device" or
the "bus" link. So don't waste the time with our lists or wait
for the timeout.

1 files changed, 24 insertions, 0 deletions

diff --git a/udev_lib.c b/udev_lib.c
index 6807f817a1..a3fab9632d 100644
--- a/udev_lib.c
+++ b/udev_lib.c
@@ -28,6 +28,7 @@
 #include <dirent.h>
 #include <sys/stat.h>
 #include <sys/mman.h>
+#include <sys/utsname.h>
 
 #include "udev.h"
 #include "logging.h"
@@ -72,6 +73,29 @@ void udev_set_values(struct udevice *udev, const char* devpath,
 	udev->type = get_device_type(devpath, subsystem);
 }
 
+int kernel_release_satisfactory(int version, int patchlevel, int sublevel)
+{
+	static struct utsname uts;
+	static int kversion = 0;
+	static int kpatchlevel;
+	static int ksublevel;
+
+	if (kversion == 0) {
+		if (uname(&uts) != 0)
+			return -1;
+
+		if (sscanf (uts.release, "%u.%u.%u", &kversion, &kpatchlevel, &ksublevel) != 3) {
+			kversion = 0;
+			return -1;
+		}
+	}
+
+	if (kversion >= version && kpatchlevel >= patchlevel && ksublevel >= sublevel)
+		return 1;
+	else
+		return 0;
+}
+
 int create_path(const char *path)
 {
 	char p[NAME_SIZE];