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, 7 insertions, 0 deletions

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index d57f11759480..37e0f81cada2 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2855,6 +2855,11 @@ static struct block_device_operations pktcdvd_ops = {
         .media_changed =        pkt_media_changed,
 };
 
+static char *pktcdvd_nodename(struct gendisk *gd)
+{
+        return kasprintf(GFP_KERNEL, "pktcdvd/%s", gd->disk_name);
+}
+
 /*
  * Set up mapping from pktcdvd device to CD-ROM device.
  */
@@ -2907,6 +2912,7 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev)
         disk->fops = &pktcdvd_ops;
         disk->flags = GENHD_FL_REMOVABLE;
         strcpy(disk->disk_name, pd->name);
+        disk->nodename = pktcdvd_nodename;
         disk->private_data = pd;
         disk->queue = blk_alloc_queue(GFP_KERNEL);
         if (!disk->queue)
@@ -3062,6 +3068,7 @@ static const struct file_operations pkt_ctl_fops = {
 static struct miscdevice pkt_misc = {
         .minor          = MISC_DYNAMIC_MINOR,
         .name           = DRIVER_NAME,
+        .name           = "pktcdvd/control",
         .fops           = &pkt_ctl_fops
 };