usb: dwc_otg: support to the latest usb gadget driver.

[firefly-linux-kernel-4.4.55.git] / block / partition-generic.c

diff --git a/block/partition-generic.c b/block/partition-generic.c
index 3b030157ec85c45faedd520b6993cd440254d763..ae95e963c5bb15df14a96b77a50c8a9302f23f53 100644 (file)
--- a/block/partition-generic.c
+++ b/block/partition-generic.c
@@ -216,10 +216,21 @@ static void part_release(struct device *dev)
        kfree(p);
 }
 
+static int part_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+       struct hd_struct *part = dev_to_part(dev);
+
+       add_uevent_var(env, "PARTN=%u", part->partno);
+       if (part->info && part->info->volname[0])
+               add_uevent_var(env, "PARTNAME=%s", part->info->volname);
+       return 0;
+}
+
 struct device_type part_type = {
        .name           = "partition",
        .groups         = part_attr_groups,
        .release        = part_release,
+       .uevent         = part_uevent,
 };
 
 static void delete_partition_rcu_cb(struct rcu_head *head)
@@ -397,7 +408,7 @@ static int drop_partitions(struct gendisk *disk, struct block_device *bdev)
        struct hd_struct *part;
        int res;
 
-       if (bdev->bd_part_count)
+       if (bdev->bd_part_count || bdev->bd_super)
                return -EBUSY;
        res = invalidate_partition(disk, 0);
        if (res)