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authorTony Luck <tony.luck@intel.com>2012-07-20 13:15:20 -0700
committerTheodore Ts'o <tytso@mit.edu>2012-07-24 13:16:41 -0400
commitd114a33387472555188f142ed8e98acdb8181c6d (patch)
treecc03a96acc7de8bc7a11df6d7b209e8ba3c3795a
parentcbc96b7594b5691d61eba2db8b2ea723645be9ca (diff)
dmi: Feed DMI table to /dev/random driver
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>
-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 153980be4ee6..b298158cb922 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -6,6 +6,7 @@
#include <linux/dmi.h>
#include <linux/efi.h>
#include <linux/bootmem.h>
+#include <linux/random.h>
#include <asm/dmi.h>
/*
@@ -111,6 +112,8 @@ 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;
}