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dmi: Feed DMI table to /dev/random driver

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Send the entire DMI (SMBIOS) table to the /dev/random driver to
help seed its pools.

Signed-off-by: Tony Luck <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]>
This commit is contained in:
Tony Luck 2012-07-20 13:15:20 -07:00 • committed by Theodore Ts'o
commit d114a33387
1 changed files with 3 additions and 0 deletions
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3
drivers/firmware/dmi_scan.c
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@ -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;
}