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random: run random_int_secret_init() run after all late_initcalls

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commit 47d06e532e upstream.

The some platforms (e.g., ARM) initializes their clocks as
late_initcalls for some unknown reason.  So make sure
random_int_secret_init() is run after all of the late_initcalls are
run.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
[ kamal: backport to 3.8 (context) ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
This commit is contained in:
Theodore Ts'o
2013-09-10 10:52:35 -04:00
committed by Kamal Mostafa
parent 9be02c1ac6
commit 4eb8747973
3 changed files with 4 additions and 2 deletions
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3
drivers/char/random.c
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@@ -1462,12 +1462,11 @@ ctl_table random_table[] = {
static u32 random_int_secret[MD5_MESSAGE_BYTES / 4] ____cacheline_aligned;
static int __init random_int_secret_init(void)
int random_int_secret_init(void)
{
get_random_bytes(random_int_secret, sizeof(random_int_secret));
return 0;
}
late_initcall(random_int_secret_init);
/*
* Get a random word for internal kernel use only. Similar to urandom but

1
include/linux/random.h
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@@ -17,6 +17,7 @@ extern void add_interrupt_randomness(int irq, int irq_flags);
extern void get_random_bytes(void *buf, int nbytes);
extern void get_random_bytes_arch(void *buf, int nbytes);
void generate_random_uuid(unsigned char uuid_out[16]);
extern int random_int_secret_init(void);
#ifndef MODULE
extern const struct file_operations random_fops, urandom_fops;

2
init/main.c
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@@ -70,6 +70,7 @@
#include <linux/perf_event.h>
#include <linux/file.h>
#include <linux/ptrace.h>
#include <linux/random.h>
#include <asm/io.h>
#include <asm/bugs.h>
@@ -784,6 +785,7 @@ static void __init do_basic_setup(void)
do_ctors();
usermodehelper_enable();
do_initcalls();
random_int_secret_init();
}
static void __init do_pre_smp_initcalls(void)