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Commit e8a7d2bb authored by Linus Walleij's avatar Linus Walleij
Browse files

ARM: ep93xx: toss the device ID into the entropy pool 



It doesn't hurt to add this random stuff into the entropy pool
as is custom to do with device-unique numbers.

Reviewed-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent b8824c9a

arch/arm/mach-ep93xx/core.c

+7 −0
Original line number Original line Diff line number Diff line
@@ -37,6 +37,7 @@ 
#include <linux/irqchip/arm-vic.h>

#include <linux/irqchip/arm-vic.h>

#include <linux/reboot.h>

#include <linux/reboot.h>

#include <linux/usb/ohci_pdriver.h>

#include <linux/usb/ohci_pdriver.h>

#include <linux/random.h>





#include <mach/hardware.h>

#include <mach/hardware.h>

#include <linux/platform_data/video-ep93xx.h>

#include <linux/platform_data/video-ep93xx.h>
@@ -862,6 +863,12 @@ static const char __init *ep93xx_get_soc_id(void) 
	if (id != id2)

	if (id != id2)

		return "invalid";

		return "invalid";





	/* Toss the unique ID into the entropy pool */

	add_device_randomness(&id2, 4);

	add_device_randomness(&id3, 4);

	add_device_randomness(&id4, 4);

	add_device_randomness(&id5, 4);



	snprintf(ep93xx_soc_id, sizeof(ep93xx_soc_id),

	snprintf(ep93xx_soc_id, sizeof(ep93xx_soc_id),

		 "%08x%08x%08x%08x", id2, id3, id4, id5);

		 "%08x%08x%08x%08x", id2, id3, id4, id5);