linux-kernel - [PATCH] crypto: exynos - Icrease the priority of the driver

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Message-id: <20171205162046.11621-1-l.stelmach@samsung.com>
Date:   Tue, 05 Dec 2017 17:20:46 +0100
From:   Łukasz Stelmach <l.stelmach@...sung.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>, robh+dt@...nel.org,
        Stephan Mueller <smueller@...onox.de>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Kukjin Kim <kgene@...nel.org>, linux-crypto@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Łukasz Stelmach <l.stelmach@...sung.com>,
        m.szyprowski@...sung.com, b.zolnierkie@...sung.com
Subject: [PATCH] crypto: exynos - Icrease the priority of the driver

exynos-rng is one of many implementations of stdrng. With priority as
low as 100 it isn't selected, if software implementations (DRBG) are
available. The value 300 was selected to give the PRNG priority before
software implementations, but allow them to be selected in FIPS-mode
(fips=1 in the kernel command line).

Signed-off-by: Łukasz Stelmach <l.stelmach@...sung.com>
---

Thank you Stephan Mueller for explanations.

 drivers/crypto/exynos-rng.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/exynos-rng.c b/drivers/crypto/exynos-rng.c
index 4b2ed1d178af..5a37397fb1c5 100644
--- a/drivers/crypto/exynos-rng.c
+++ b/drivers/crypto/exynos-rng.c
@@ -256,7 +256,7 @@ static struct rng_alg exynos_rng_alg = {
 	.base			= {
 		.cra_name		= "stdrng",
 		.cra_driver_name	= "exynos_rng",
-		.cra_priority		= 100,
+		.cra_priority		= 300,
 		.cra_ctxsize		= sizeof(struct exynos_rng_ctx),
 		.cra_module		= THIS_MODULE,
 		.cra_init		= exynos_rng_kcapi_init,
-- 
2.11.0