From: Theodore Ts'o <tytso@mit.edu>
Date: Tue, 10 Sep 2013 14:52:35 +0000 (-0400)
Subject: random: run random_int_secret_init() run after all late_initcalls
X-Git-Tag: firefly_0821_release~6453^2~534
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=b7a52f5111bc53ffbfff96330621cbde80df6ba4;p=firefly-linux-kernel-4.4.55.git

random: run random_int_secret_init() run after all late_initcalls

commit 47d06e532e95b71c0db3839ebdef3fe8812fca2c 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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/char/random.c b/drivers/char/random.c
index 35487e8ded59..81eefa1c0d3f 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -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
diff --git a/include/linux/random.h b/include/linux/random.h
index 3b9377d6b7a5..6312dd9ba449 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -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;
diff --git a/init/main.c b/init/main.c
index 9484f4ba88d0..e83ac04fda97 100644
--- a/init/main.c
+++ b/init/main.c
@@ -74,6 +74,7 @@
 #include <linux/ptrace.h>
 #include <linux/blkdev.h>
 #include <linux/elevator.h>
+#include <linux/random.h>
 
 #include <asm/io.h>
 #include <asm/bugs.h>
@@ -777,6 +778,7 @@ 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)