Driver Core: block: add nodename support for block drivers.

This adds support for block drivers to report their requested nodename
to userspace.  It also updates a number of block drivers to provide the
needed subdirectory and device name to be used for them.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/block/genhd.c b/block/genhd.c
index fe7ccc0a618f..f4c64c2b303a 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -996,10 +996,20 @@ struct class block_class = {
         .name           = "block",
 };
 
+static char *block_nodename(struct device *dev)
+{
+        struct gendisk *disk = dev_to_disk(dev);
+
+        if (disk->nodename)
+                return disk->nodename(disk);
+        return NULL;
+}
+
 static struct device_type disk_type = {
         .name           = "disk",
         .groups         = disk_attr_groups,
         .release        = disk_release,
+        .nodename       = block_nodename,
 };
 
 #ifdef CONFIG_PROC_FS