From 109b6236294b53d8eaa50be7d9e9ad37079f5f7e Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 29 Jul 2013 13:11:50 +1000 Subject: [PATCH] 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: Anton Blanchard Signed-off-by: Grant Likely --- drivers/of/fdt.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 4c5ee96..543c500 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -18,6 +18,7 @@ #include #include #include +#include #include /* 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); -- 2.7.4