X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=block%2Fgenhd.c;h=a60cfb2c946246eba028a09868654111e9921e8e;hb=b67a2db05d748b13fa7e7fa2a4678eb4aac1f00f;hp=bd3060684ab2f0cb3f0e926f6ac62071442709a7;hpb=e3438330f58330ec236c861d43f46bef06780e62;p=android-x86%2Fkernel.git

diff --git a/block/genhd.c b/block/genhd.c
index bd3060684ab2..a60cfb2c9462 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1109,6 +1109,22 @@ static void disk_release(struct device *dev)
 		blk_put_queue(disk->queue);
 	kfree(disk);
 }
+
+static int disk_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+	struct gendisk *disk = dev_to_disk(dev);
+	struct disk_part_iter piter;
+	struct hd_struct *part;
+	int cnt = 0;
+
+	disk_part_iter_init(&piter, disk, 0);
+	while((part = disk_part_iter_next(&piter)))
+		cnt++;
+	disk_part_iter_exit(&piter);
+	add_uevent_var(env, "NPARTS=%u", cnt);
+	return 0;
+}
+
 struct class block_class = {
 	.name		= "block",
 };
@@ -1128,6 +1144,7 @@ static struct device_type disk_type = {
 	.groups		= disk_attr_groups,
 	.release	= disk_release,
 	.devnode	= block_devnode,
+	.uevent		= disk_uevent,
 };
 
 #ifdef CONFIG_PROC_FS