From: "Łukasz Stelmach" <l.stelmach@samsung.com>
To: Matt Mackall <mpm@selenic.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
bcm-kernel-feedback-list@broadcom.com,
Kukjin Kim <kgene@kernel.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
Florian Fainelli <f.fainelli@gmail.com>,
Markus Elfring <elfring@users.sourceforge.net>,
Matthias Brugger <mbrugger@suse.com>,
Stefan Wahren <wahrenst@gmx.net>,
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" <b.zolnierkie@samsung.com>,
"Łukasz Stelmach" <l.stelmach@samsung.com>
Subject: [PATCH 2/2] hwrng: exynos - Set the quality value
Date: Thu, 14 May 2020 21:07:34 +0200 [thread overview]
Message-ID: <20200514190734.32746-3-l.stelmach@samsung.com> (raw)
In-Reply-To: <20200514190734.32746-1-l.stelmach@samsung.com>
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 6.332937 bits of entropy
in each 8 bits of data.
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..ff6739272bf5 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 = 800;
platform_set_drvdata(pdev, trng);
trng->dev = &pdev->dev;
--
2.25.0
next prev parent reply other threads:[~2020-05-14 19:07 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200514190737eucas1p18ccdddb185ea7611683a6859e17bc721@eucas1p1.samsung.com>
2020-05-14 19:07 ` [PATCH 0/2] Set the quality value for two HW RNGs Łukasz Stelmach
[not found] ` <CGME20200514190738eucas1p2695c0d8af064ee702209ca03696ef438@eucas1p2.samsung.com>
2020-05-14 19:07 ` [PATCH 1/2] hwrng: iproc-rng200 - Set the quality value Łukasz Stelmach
2020-05-14 20:20 ` Stephan Mueller
[not found] ` <CGME20200514221852eucas1p2bea169d0b4467b0ec9e195c6ac58a08a@eucas1p2.samsung.com>
2020-05-14 22:18 ` Lukasz Stelmach
2020-05-15 8:32 ` Stephan Mueller
[not found] ` <CGME20200515090647eucas1p21018edfd835730c9a68dcb186349ee74@eucas1p2.samsung.com>
2020-05-15 9:06 ` Lukasz Stelmach
[not found] ` <CGME20200515090158eucas1p1b653fc50f1ad4f0f6c92525ab3188d45@eucas1p1.samsung.com>
2020-05-15 9:01 ` Lukasz Stelmach
2020-05-15 9:10 ` Stephan Mueller
[not found] ` <CGME20200515110002eucas1p136759396d9b61f214d1f14856c009501@eucas1p1.samsung.com>
2020-05-15 10:59 ` Lukasz Stelmach
[not found] ` <CGME20200514190740eucas1p293129b2ef3ba706652a9327e55db9649@eucas1p2.samsung.com>
2020-05-14 19:07 ` Łukasz Stelmach [this message]
2020-05-14 20:20 ` [PATCH 2/2] hwrng: exynos " Stephan Mueller
[not found] ` <CGME20200519212617eucas1p1b6e7af0ecb894896b165601fafd6abe8@eucas1p1.samsung.com>
2020-05-19 21:25 ` [PATCH v2 0/2] Set the quality value for two HW RNGs Łukasz Stelmach
[not found] ` <CGME20200519212619eucas1p22fa5d3db2521096dc4b79f6e53016d17@eucas1p2.samsung.com>
2020-05-19 21:25 ` [PATCH v2 1/2] hwrng: iproc-rng200 - Set the quality value Łukasz Stelmach
2020-05-20 6:23 ` Stephan Mueller
[not found] ` <CGME20200520091043eucas1p15ecae108007382a95b01e42241cc7a26@eucas1p1.samsung.com>
2020-05-20 9:10 ` Lukasz Stelmach
2020-05-20 9:18 ` Stephan Mueller
[not found] ` <CGME20200520104448eucas1p122e9a8ed84d5276a1b796e10ef5e1964@eucas1p1.samsung.com>
2020-05-20 10:44 ` Lukasz Stelmach
2020-05-20 11:53 ` Stephan Mueller
2020-05-20 12:00 ` Krzysztof Kozlowski
2020-05-20 12:11 ` Stephan Mueller
[not found] ` <CGME20200520143211eucas1p21bd93be5c62726aa715db05bb6e7119b@eucas1p2.samsung.com>
2020-05-20 14:31 ` Lukasz Stelmach
2020-05-20 8:18 ` Kamil Konieczny
2020-05-21 11:00 ` Stefan Wahren
[not found] ` <CGME20200521191415eucas1p2d112a86171b23dcf255e7da53a56f4f3@eucas1p2.samsung.com>
2020-05-21 19:14 ` Lukasz Stelmach
2020-05-23 18:46 ` Stephan Müller
[not found] ` <CGME20200519212621eucas1p13279db41d930b69e115972463c994a37@eucas1p1.samsung.com>
2020-05-19 21:25 ` [PATCH v2 2/2] hwrng: exynos " Łukasz Stelmach
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