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Tue, 19 May 2020 21:26:20 +0000 (GMT) From: =?UTF-8?q?=C5=81ukasz=20Stelmach?= To: Matt Mackall , Herbert Xu , Arnd Bergmann , Greg Kroah-Hartman , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, Kukjin Kim , Krzysztof Kozlowski , Florian Fainelli , Markus Elfring , Matthias Brugger , Stefan Wahren , linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, Stephan Mueller Cc: Bartlomiej Zolnierkiewicz , =?UTF-8?q?=C5=81ukasz=20Stelmach?= Subject: [PATCH v2 2/2] hwrng: exynos - Set the quality value Date: Tue, 19 May 2020 23:25:52 +0200 Message-Id: <20200519212552.11671-3-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200519212552.11671-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA02Sa1CMYRTHPfte9q2x9dpKx2pklj5kKGHMY8RgzHi/kNH4YoiVVxptmd2S jFEjSmFrQrQqkWZXd1uWLsK2lTS1RrmNS9glMpax20i1Lu27hm+//3n+55z/mXkYQnqcljHx icm8KlGRIKe9SWPnD8sC1wZzzMI+3QzsKugU42vn6yhcc6qDxJYcHYHH7GYxziyvo/GJ4SCc Z/1EYIulXoyfmfQIG6yPKTz46ocI9zcX0/i8pU2Ey07bKFxm1CD8rqiBxvYqG8Jne2pI3HUv h1jlz42PFSBOO9hLc98GBkRck/almCs33KY5450QzlCZQ3O3S6rFXMOVdE7TWIk4zcd6xNU1 PiK5I/ezKc5hmLXRZ4t35C4+IX4/rwpfucN7T8mDAWLfL/EBZ8uoKAM56VzkxQC7BN5WlVK5 yJuRsnoE3ZpCQhBOBPWFWrEgHAhKj36h/rYM3jzjcekQtPaeIAUxhKDq7nu3i2ZXQ17FPTf7 s7UUfK/gJ5lgU+HYG5u77seuAFdRv5tJNgROPhhys4RdDp+uPiaFbcGQrbvhDuvFRoJ5dIQW PNOgu8jm9viy86D6yBNSmB8MmdcvEELvAAOajhSB18JEZqHnAj8Y7moUCxwEv5ouinIR84fT 4XTB0slbgD2JwFg86smwHF70jdGTHoINhbrmcKG8GqqttYTQ6gNPP08TEvhAgfGcpyyB41lS wT0XavNaPQNlcGpYj/KRXPvfLdr/8mv/7SpDRCUK5FPUyjhevTiRTw1TK5TqlMS4sNgkpQH9 +Z89P7tGbqK2iZ0mxDJIPlXytKk9Rkop9qvTlCYEDCH3l+R/MMVIJbsUaQd5VdJ2VUoCrzah mQwpD5Qsvvxxm5SNUyTze3l+H6/6+ypivGQZyFcxkTzS/21+uwtFXJ+yIKK4ZaXjudGqdK0/ nNWUeS3gYZRTP+VutK53c2xDaPx48O7ZO4deZqTroxdpcX/1nPYRxxr7rSjfcFnw9BD7a61t nSbGYAn/ujX165qSt/61YfWbQmWX4jrvzDf/dHT4dR+KX7Leao8NWBZlXlVJnUNOOaneo4iY R6jUit+0kkicmwMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprFKsWRmVeSWpSXmKPExsVy+t/xu7p//I7EGfx/Ymnxd9IxdouNM9az WqztPcpicb5zObPFr3dH2C2aF69ns+h+JWPR//g1s8X58xvYLW4eWsFosenxNVaL+/d+Mllc 3jWHzWLG+X1MFgsmP2G1WLCtj9Hi6czNbBbvVj9htJh6ei2LxfETncwOIh6/f01i9Jh1/yyb x6crV5g8ds66y+6xeNN+No9tB1Q9Nq3qZPPYP3cNu8fmJfUefVtWMXr0vdzA6LF+y1UWj6ZT 7awenzfJBfBF6dkU5ZeWpCpk5BeX2CpFG1oY6RlaWugZmVjqGRqbx1oZmSrp29mkpOZklqUW 6dsl6GXMvXCFueA/e8WX3T+YGhi/sHUxcnJICJhI3N8xhbmLkYtDSGApo8TNHw8Yuxg5gBJS EivnpkPUCEv8udbFBlHzlFHi6IqfLCAJNgFHif6lJ1hBEiICe1gldt/oZAJJMAuUS7Q+fMIK YgsL2Er8nXkZzGYRUJXoufAczOYVsJZ4vfIaC8QGeYn25dvBLuIUsJE48uMrmC0kkCsx8c9Z qHpBiZMzn7CAHMcsoC6xfp4QSJhfQEtiTdN1Foi18hLNW2czT2AUmoWkYxZCxywkVQsYmVcx iqSWFuem5xYb6hUn5haX5qXrJefnbmIEpottx35u3sF4aWPwIUYBDkYlHl6DPYfjhFgTy4or cw8xSnAwK4nwTnhxKE6INyWxsiq1KD++qDQntfgQoynQmxOZpUST84GpLK8k3tDU0NzC0tDc 2NzYzEJJnLdD4GCMkEB6YklqdmpqQWoRTB8TB6dUA6PH9Psbp7Ko73na4mv383qVXmnWwksP HlZN3RHTV8/3NpCvM+/dra8t2x/k38pT2/Oi+7D1m7q5xid0EzbtPnPVVfbBAU3WLp+2bk1G M7VXq3/5XVqm/8Qo8IJiTEzG/E+O9f1hPw59/3C977TGg+aITov0D0GyO7RPeDWK+q1+qlWY tykzwkKJpTgj0VCLuag4EQC9oUcTLQMAAA== X-CMS-MailID: 20200519212621eucas1p13279db41d930b69e115972463c994a37 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20200519212621eucas1p13279db41d930b69e115972463c994a37 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200519212621eucas1p13279db41d930b69e115972463c994a37 References: <20200514190734.32746-1-l.stelmach@samsung.com> <20200519212552.11671-1-l.stelmach@samsung.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The value was estimaded with ea_iid[1] using on 10485760 bytes read from the RNG via /dev/hwrng. The min-entropy value calculated using the most common value estimate (NIST SP 800-90P[2], section 6.3.1) was 7.489627. [1] https://github.com/usnistgov/SP800-90B_EntropyAssessment [2] https://csrc.nist.gov/publications/detail/sp/800-90b/final Signed-off-by: Łukasz Stelmach --- drivers/char/hw_random/exynos-trng.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/char/hw_random/exynos-trng.c b/drivers/char/hw_random/exynos-trng.c index 8e1fe3f8dd2d..2a5896122001 100644 --- a/drivers/char/hw_random/exynos-trng.c +++ b/drivers/char/hw_random/exynos-trng.c @@ -123,6 +123,7 @@ static int exynos_trng_probe(struct platform_device *pdev) trng->rng.init = exynos_trng_init; trng->rng.read = exynos_trng_do_read; trng->rng.priv = (unsigned long) trng; + trng->rng.quality = 900; platform_set_drvdata(pdev, trng); trng->dev = &pdev->dev; -- 2.26.2