| Date | Sun, 09 Sep 2012 23:43:13 +0100 | From | Ben Hutchings <> | Subject | [ 83/95] dmi: Feed DMI table to /dev/random driver |
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3.2-stable review patch. If anyone has any objections, please let me know.
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From: Tony Luck <tony.luck@intel.com>
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: Ben Hutchings <ben@decadent.org.uk> --- drivers/firmware/dmi_scan.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c index 153980b..b298158 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; }
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