mtd: blktrans: allow FTL drivers to export sysfs attributes
This patch adds an ability to export sysfs attributes below
the block disk device.
This can be used to pass the udev an information about the FTL
and could include the vendor, serial, version, etc...
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 646cc84..9dd23d6 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -379,6 +379,10 @@
set_disk_ro(gd, 1);
add_disk(gd);
+
+ if (new->disk_attributes)
+ sysfs_create_group(&disk_to_dev(gd)->kobj,
+ new->disk_attributes);
return 0;
error4:
module_put(tr->owner);
@@ -405,6 +409,10 @@
/* Stop new requests to arrive */
del_gendisk(old->disk);
+ if (old->disk_attributes)
+ sysfs_remove_group(&disk_to_dev(old->disk)->kobj,
+ old->disk_attributes);
+
/* Stop the thread */
kthread_stop(old->thread);