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generic: add bcm2835-rng quality patch

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This patch allows devices without a high resolution timer to boot up faster.
It should speed up boots for bcm2708 and bcm63xx.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit 7747b3fa36)
This commit is contained in:
Álvaro Fernández Rojas
2021-02-20 18:59:25 +01:00
parent 5808c8c6ba
commit 906c87814d
1 changed files with 26 additions and 0 deletions
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26
target/linux/generic/pending-5.4/840-hwrng-bcm2835-set-quality-to-1000.patch Normal file
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@@ -0,0 +1,26 @@
From d6988cf1d16faac56899918bb2b1be8d85155e3f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 20 Feb 2021 18:36:38 +0100
Subject: [PATCH] hwrng: bcm2835: set quality to 1000
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This allows devices without a high precission timer to reduce boot from >100s
to <30s.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
drivers/char/hw_random/bcm2835-rng.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/char/hw_random/bcm2835-rng.c
+++ b/drivers/char/hw_random/bcm2835-rng.c
@@ -167,6 +167,7 @@ static int bcm2835_rng_probe(struct plat
priv->rng.init = bcm2835_rng_init;
priv->rng.read = bcm2835_rng_read;
priv->rng.cleanup = bcm2835_rng_cleanup;
+ priv->rng.quality = 1000;
if (dev_of_node(dev)) {
rng_id = of_match_node(bcm2835_rng_of_match, np);