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Thu, 14 May 2020 19:07:38 +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 Cc: Bartlomiej Zolnierkiewicz , =?utf-8?b?xYF1?= =?utf-8?q?kasz_Stelmach?= Subject: [PATCH 1/2] hwrng: iproc-rng200 - Set the quality value Date: Thu, 14 May 2020 21:07:33 +0200 Message-Id: <20200514190734.32746-2-l.stelmach@samsung.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200514190734.32746-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA01SfUyMcRz363ntOD1d0Vde2o7mZVNZzX7mEGN7Zmb+sDGrOHp2opI7Hdm8 hd670qG6iqaoJR1355YoLVS0ujAulkLpzbJZjM5LunvO+O/z/X7eft/txxKyCcqfjYk/JKjj lbFyWkJam8c7lv64WB8VYutdhH/lNTP4VoGRwjeyH5HYll5BYMenhww+XWakcebIHJzT95HA NttNBr9qqkTY1PeSwr094x74eV0xjQtsDR64VN9P4VKrDuEPhWYaf7rej3BLazoR7sP/cOQh 3tDbTvN3DG8Yvsx0n+atjYG8qSqd5u+XVDO8ufwEr7NUIV43fBPxRssLkk9+kkrxY6Z5W6Q7 JIpoITZGK6iDV++S7L2m+0glXGaOPJ/IJE+ic3QG8mSBC4PfFrsLy7hKBA+uqDOQZBJ/QTDR ncaIwxiCnqed1F/Hpc/lpEhUIMhPLXQPgwiGB+4gp4rm1kLO1VbKSfhyZynQf84lnQTBHYaz 7/pdUT5cOJhSslzlJBcI1okXrr2UWwm5BTnuugAoOtXm0nhyCrAPOTxEjTc8Lux3ZXpxS6A6 2e7OD4DTt4sIZzFwjSz0vi93X7oeUh70uLEPjLRYGBHPgTZ91qSZncQnQJ+3XPRmIbAWfydF zUro7nDQTg3BLQZjXbC4Xgv6y88Y0Toduka9xSdMhzxrPiGupZCWIhPVC6Am55470B+yRypR LpIb/jvG8N8Bhn9dpYioQn5CoiZOJWhC44XDQRplnCYxXhW050CcCU1+y7bfLV9rUcPP3U2I Y5F8mjTkQn2UjFJqNUlxTQhYQu4r3Wy8GyWTRiuTjgrqAzvVibGCpgnNZkm5nzT0ynCkjFMp Dwn7BSFBUP9lPVhP/5NIImjbZ6lqJAf5sW2lfrsGA1Z492yvauno5n5m79Z6Lnfsa1atmuGb +nXqW7BET9Mlb7W/Gpg6f8dxa722Mm3oXp/C6/xo7aIOvXl0f1Kx15mwhog687bODPuxyKsz jYEb13UhRe23rpCy3IxN+Wb53Cnzby30YRUlERvOkWvG/V/LSc1e5bIlhFqj/AOwdzj4kgMA AA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupnleLIzCtJLcpLzFFi42I5/e/4Xd1f0/bGGcxYpW3xd9IxdouNM9az WqztPcpicb5zObPFr3dH2C2aF69ns+h+JWPR//g1s8X58xvYLW4eWsFosenxNVaL+/d+Mllc 3jWHzWLG+X1MFgsmP2G1WLCtj9Hi6czNbBbvVj9htDh+opPZQdjj969JjB6z7p9l89g56y67 x+JN+9k8th1Q9di0qpPNY//cNewem5fUe/RtWcXo0fdyA6PH+i1XWTyaTrWzenzeJBfAG6Vn U5RfWpKqkJFfXGKrFG1oYaRnaGmhZ2RiqWdobB5rZWSqpG9nk5Kak1mWWqRvl6CXsazvNWvB fPaKy/+7WRoYJ7J1MXJySAiYSMz7uISli5GLQ0hgKaPEzi2ngBIcQAkpiZVz0yFqhCX+XOsC qxcSeApU89MAxGYTcJToX3qCFaRXRGAyq8SbPa1MIAlmgXKJ1odPWEFsYQEHiU1tPWDNLAKq Etv+XwWL8wpYS0yY0c8KsUBeYnbjabAaTgEbiesvfjFBLLOWuPNlLlS9oMTJmU9YQG5jFlCX WD9PCCTML6AlsabpOgvEWnmJ5q2zmScwCs1C0jELoWMWkqoFjMyrGEVSS4tz03OLjfSKE3OL S/PS9ZLzczcxAhPDtmM/t+xg7HoXfIhRgINRiYfXYOreOCHWxLLiytxDjBIczEoivH7rd8cJ 8aYkVlalFuXHF5XmpBYfYjQFenMis5Rocj4waeWVxBuaGppbWBqaG5sbm1koifN2CByMERJI TyxJzU5NLUgtgulj4uCUamDc6Bnd/f4Rb9E2S0XxfoavT97lrJYWeJGavOdAdc+3T//EbX4r 9VfbL/mudnfGjQjz39v11dL3Fc68rXlzVpTNmhNbXp3gUbnf0fNthXi8zYL/n82+xF6X1Ant zpssuejVnsMrInhTuZSfV802Ud0nz/I8pPGf8tfqzrwLTBOPlX6z3PlkU/0JJZbijERDLeai 4kQAVkcDliIDAAA= X-CMS-MailID: 20200514190738eucas1p2695c0d8af064ee702209ca03696ef438 X-Msg-Generator: CA X-RootMTR: 20200514190738eucas1p2695c0d8af064ee702209ca03696ef438 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200514190738eucas1p2695c0d8af064ee702209ca03696ef438 References: <20200514190734.32746-1-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 has been estimaded by obtainig 1024 chunks of data 128 bytes (1024 bits) each from the generator and finding chunk with minimal entropy using the ent(1) tool. The value was 6.327820 bits of entropy in each 8 bits of data. 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..7eb02a23f744 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 = 800, /* Register driver */ ret = devm_hwrng_register(dev, &priv->rng);