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From:   =?UTF-8?q?=C5=81ukasz=20Stelmach?= <l.stelmach@samsung.com>
To:     Matt Mackall <mpm@selenic.com>,
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Cc:     Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
        =?UTF-8?q?=C5=81ukasz=20Stelmach?= <l.stelmach@samsung.com>
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>
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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 <l.stelmach@samsung.com>
---
 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