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authorTony Luck <tony.luck@intel.com>2012-07-20 13:15:20 -0700
committerPaul Gortmaker <paul.gortmaker@windriver.com>2012-08-17 15:36:11 -0400
commit201095fcd2b848cd22711f9a58d1ffd0c9f3e458 (patch)
tree10f63030f1980052b473bddf063727c1882f40fa
parent3c3c74c6f281415dddd68a645d89dde2f0d9eadd (diff)
dmi: Feed DMI table to /dev/random driver
commit d114a33387472555188f142ed8e98acdb8181c6d upstream. Send the entire DMI (SMBIOS) table to the /dev/random driver to help seed its pools. Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
-rw-r--r--drivers/firmware/dmi_scan.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index d46467271349..1816d928f741 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -5,6 +5,7 @@
#include <linux/dmi.h>
#include <linux/efi.h>
#include <linux/bootmem.h>
+#include <linux/random.h>
#include <asm/dmi.h>
/*
@@ -110,6 +111,8 @@ static int __init dmi_walk_early(void (*decode)(const struct dmi_header *,
dmi_table(buf, dmi_len, dmi_num, decode, NULL);
+ add_device_randomness(buf, dmi_len);
+
dmi_iounmap(buf, dmi_len);
return 0;
}