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From: Tony Lindgren <tony@atomide.com>
To: Matt Mackall <mpm@selenic.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org
Cc: linux-crypto@vger.kernel.org,
	"Aaro Koskinen" <aaro.koskinen@iki.fi>,
	"Adam Ford" <aford173@gmail.com>,
	"Pali Rohár" <pali.rohar@gmail.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Tero Kristo" <t-kristo@ti.com>,
	devicetree@vger.kernel.org
Subject: [PATCH 4/6] hwrng: omap3-rom - Initialize default quality to get data
Date: Fri, 13 Sep 2019 15:09:20 -0700
Message-ID: <20190913220922.29501-5-tony@atomide.com> (raw)
In-Reply-To: <20190913220922.29501-1-tony@atomide.com>

Similar to commit 62f95ae805fa ("hwrng: omap - Set default quality")
we need to initialize the default quality for the RNG to be used.

The symptoms of this problem is that doing hd /dev/random does not
produce much data at all.

Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 drivers/char/hw_random/omap3-rom-rng.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/hw_random/omap3-rom-rng.c b/drivers/char/hw_random/omap3-rom-rng.c
--- a/drivers/char/hw_random/omap3-rom-rng.c
+++ b/drivers/char/hw_random/omap3-rom-rng.c
@@ -88,6 +88,7 @@ static int omap3_rom_rng_read(struct hwrng *rng, void *data, size_t max, bool w)
 
 static struct hwrng omap3_rom_rng_ops = {
 	.name		= "omap3-rom",
+	.quality	= 900,
 };
 
 static int omap3_rom_rng_probe(struct platform_device *pdev)
-- 
2.23.0

  parent reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-13 22:09 [PATCH 0/6] Non-urgent fixes and improvments for omap3-rom-rng Tony Lindgren
2019-09-13 22:09 ` [PATCH 1/6] ARM: OMAP2+: Check omap3-rom-rng for GP device instead of HS device Tony Lindgren
2019-09-13 22:09 ` [PATCH 2/6] hwrng: omap3-rom - Fix missing clock by probing with device tree Tony Lindgren
2019-09-13 22:09 ` [PATCH 3/6] hwrng: omap3-rom - Call clk_prepare() on init and exit only Tony Lindgren
2019-09-14 12:54   ` Sebastian Reichel
2019-09-14 17:57     ` Tony Lindgren
2019-09-13 22:09 ` Tony Lindgren [this message]
2019-09-13 22:09 ` [PATCH 5/6] hwrng: omap3-rom - Update to use standard driver data Tony Lindgren
2019-09-13 22:09 ` [PATCH 6/6] hwrng: omap3-rom - Use runtime PM instead of custom functions Tony Lindgren
2019-09-14 13:05 ` [PATCH 0/6] Non-urgent fixes and improvments for omap3-rom-rng Sebastian Reichel
2019-09-14 17:59   ` Tony Lindgren

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