From mboxrd@z Thu Jan 1 00:00:00 1970 From: linus.walleij@linaro.org (Linus Walleij) Date: Thu, 18 Jun 2015 16:47:39 +0200 Subject: [PATCH] ARM: ep93xx: toss the device ID into the entropy pool Message-ID: <1434638859-27381-1-git-send-email-linus.walleij@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org It doesn't hurt to add this random stuff into the entropy pool as is custom to do with device-unique numbers. Signed-off-by: Linus Walleij --- arch/arm/mach-ep93xx/core.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c index 5e2151bcc0c5..c393b1b0310d 100644 --- a/arch/arm/mach-ep93xx/core.c +++ b/arch/arm/mach-ep93xx/core.c @@ -37,6 +37,7 @@ #include #include #include +#include #include #include @@ -862,6 +863,12 @@ static const char __init *ep93xx_get_soc_id(void) if (id != id2) 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), "%08x%08x%08x%08x", id2, id3, id4, id5); -- 1.9.3