Commit 109b6236 authored by Anton Blanchard's avatar Anton Blanchard Committed by Grant Likely
Browse files

of: Feed entire flattened device tree into the random pool 



We feed the entire DMI table into the random pool to provide
better random data during early boot, so do the same with the
flattened device tree.

Signed-off-by: default avatarAnton Blanchard <anton@samba.org>
Signed-off-by: default avatarGrant Likely <grant.likely@linaro.org>
parent 44856819

drivers/of/fdt.c

+12 −0
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
#include <linux/string.h>

#include <linux/errno.h>

#include <linux/slab.h>

#include <linux/random.h>



#include <asm/setup.h>  /* for COMMAND_LINE_SIZE */

#ifdef CONFIG_PPC
@@ -726,3 +727,14 @@ void __init unflatten_device_tree(void) 
}



#endif /* CONFIG_OF_EARLY_FLATTREE */



/* Feed entire flattened device tree into the random pool */

static int __init add_fdt_randomness(void)

{

	if (initial_boot_params)

		add_device_randomness(initial_boot_params,

				be32_to_cpu(initial_boot_params->totalsize));



	return 0;

}

core_initcall(add_fdt_randomness);