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Tue, 19 May 2020 21:26:19 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= 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=81uk?= =?utf-8?q?asz_Stelmach?= Subject: [PATCH v2 1/2] hwrng: iproc-rng200 - Set the quality value Date: Tue, 19 May 2020 23:25:51 +0200 Message-Id: <20200519212552.11671-2-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 X-Brightmail-Tracker: H4sIAAAAAAAAA01Sa0hTYRjm2zk7O0qz0zR8maU18kdKXkriAyW0gk50wR/9qEhr1UHDbeqW lhEomZl3USpdViMVxXsnnTWkbK20vKzyVmFJtKiWinkhNcvajpH/nvf9nud5nwc+mpBlUnL6 lOY0p9UoVQrKlTQ+nevdtLDfEh30vYHCv4qeSvCdkkYxrs97QmJrVhWB58ctEpxe3kjhHPsa XPDxG4Gt1iYJfmOuRpj/OCjGI+/nRLjPVEbhEusDETYU28TYYMxH+FPpXQqP19oQvtJVT+KO ziwi3IP9OV+EWP1ID8VO9veL2Pv6dxK2nH9IscZ2X5avyaLYhzfqJOzdilQ2v7kGsflfmxDb 2DxAsheeZ4rZKd470u2wa9hJTnUqmdMGbjvmGts03EskFNJn+9pziDR0UZKNXGhgQuCycZbK Rq60jKlGYK/4iYRhGkHuYDflYMmYKQQt1tXZiHYqxgbDBU4VgopbbyXC8BlBXckvp4BiIqCg slPswB5Mgxh+VHIOTDBnIOODzbl3Z3ZAWn+zE5OMLyyONpEOLGVCIfvmIiHE84HMqlanpwsT BpbZGUrgrIJnpTYnfyXjB3UXhkjB3wfSW64TjkDAvKDBdLuFFIx2wkhuxlJnd7B3NC/hNdBV nEsKzVKhuGiroM1FYCybXdKGwnDvPOXgEMxGaDQFCusIsEy+pASpG7weWyVEcIMi4zVCWEvh 8iWZwN4ADQVtS4ZyyLNXo0Kk0C8ro19WQP//lgERNciTS9KpYzjdZg13JkCnVOuSNDEBJ+LV PPr7Pbt+d0zfQ6aF42bE0EixQhrU9jhaJlYm61LUZgQ0ofCQFn4xR8ukJ5Up5zht/FFtkorT mZEXTSo8pVtuf42SMTHK01wcxyVw2n+vItpFnobKakNs3QGHvPcOJLS3HUv2PziWuDt0XLtr 5W+v9rpHfd48cSRxbW+xZbFSNKyZoBZSWkFaKF4n35M65Rdsk22vZQY9RuOsQ96jCSPnDYah W1dDbvrfmIqciQ5dz0+MTwa7R23bx/OR9gM95arEMX1lZITqlV9pd5R6uymwNDNWQepilcF+ hFan/AOEH3DsmgMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA02SWUwTURSGvZ2lA1odS43XigJNiIbEYkHoBYG4YDJPxGj0AbVYYQIipaRT UHgRiwvUyGZIoAohokERpBQsKHvLJot9EBHcDSWuYFhMZFVKY+Tty/n//yzJoTBhESGmziZq WU2iMkFCuuJ9S93vd81HdCh2d7VsRYv5XXxUU1hNoKobnTiyZZVjaG6ig48yyqpJdP2bO8oZ /Y4hm83IRyOW+wCZRocI9OH9LA+9eHqbRIW2Fh4qvWknUKk5G6CxoloSTTy0A1TQV4Wj7p4s bJ+ImZ/LB4zhwwDJTA0O8pgnhnd8pszUSjLmNm/GVJFFMq3FlXym9u5FJruuAjDZX42Aqa57 iTO63msEM23afnh9pDREo07Wsp5xak4bKjkhQ35SWRCS+u0Jksr85aeC/QIkvmEhMWzC2RRW 4xt2WhpnfPscS8qlLrxou46lg8t8PaAoSO+B40P79MCVEtL3AJzJ6COcdTF8UByrBy7L6AYX hvSk0zMG4P3e16RDIOn9MOdeD+EQRHQTARuHs3gOAaPPwyuf7ISD3eiDMH2wboVx2hv++WHE HSyg90J9yR/MOcEDXiuvX2nqQofAjt+/VlhIq2DewgDh9G+Ez4rsuGM5jN4Bq0uEjvIG2gdW 6l7hzrEeMOPxLSwXCA2rEob/CcMqVynAKoCITeZUsSrOT8opVVxyYqw0Wq0ygeW3MHfN1jUA /cRRC6ApIFkn2N1kVQgJZQqXqrIASGESkSD3i0UhFMQoU9NYjTpKk5zAchYQsHxmHibeFK1e frJEbZQsQCZHQTK5v9w/EEk2CzLp9pNCOlapZc+xbBKr+ZfjUS7idPCqOfBIttLglVOepu87 gK95EzC4wNs53b/o3tAiaA+enGqm+iPBnUeeBV46RdPHGZ21v3JkMvKzSMHIc7vlHuPD1uNJ 8REa4yc7DL96xjwaGaYSh8/GL83/fN2m22KV0ws69dpQc+ah+l7bVIaofKbTahurmbj0zlx5 zG1bowTn4pQyH0zDKf8CFUGULSwDAAA= X-CMS-MailID: 20200519212619eucas1p22fa5d3db2521096dc4b79f6e53016d17 X-Msg-Generator: CA X-RootMTR: 20200519212619eucas1p22fa5d3db2521096dc4b79f6e53016d17 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200519212619eucas1p22fa5d3db2521096dc4b79f6e53016d17 References: <20200514190734.32746-1-l.stelmach@samsung.com> <20200519212552.11671-1-l.stelmach@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@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 7.964464. [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/iproc-rng200.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/char/hw_random/iproc-rng200.c b/drivers/char/hw_random/iproc-rng200.c index 32d9fe61a225..95669ece050f 100644 --- a/drivers/char/hw_random/iproc-rng200.c +++ b/drivers/char/hw_random/iproc-rng200.c @@ -199,6 +199,7 @@ static int iproc_rng200_probe(struct platform_device *pdev) priv->rng.read = iproc_rng200_read, priv->rng.init = iproc_rng200_init, priv->rng.cleanup = iproc_rng200_cleanup, + priv->rng.quality = 1000, /* Register driver */ ret = devm_hwrng_register(dev, &priv->rng);