From: Jeff Dike <jdike@addtoit.com>

Comment the lack of locking.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 arch/um/drivers/random.c |    1 +
 1 files changed, 1 insertion(+)

diff -puN arch/um/drivers/random.c~uml-locking-commentary-in-the-random-driver arch/um/drivers/random.c
--- a/arch/um/drivers/random.c~uml-locking-commentary-in-the-random-driver
+++ a/arch/um/drivers/random.c
@@ -78,6 +78,7 @@ static const struct file_operations rng_
 	.read		= rng_dev_read,
 };
 
+/* rng_init shouldn't be called more than once at boot time */
 static struct miscdevice rng_miscdev = {
 	RNG_MISCDEV_MINOR,
 	RNG_MODULE_NAME,
_