Re: [PATCH] hwrng: bcm2835: set quality to 1000
flat view
From: Andrew Lunn <andrew@lunn.ch>
Date: 2021-02-20 19:10:50
Also in:
linux-crypto, lkml
On Sat, Feb 20, 2021 at 06:47:40PM +0100, Álvaro Fernández Rojas wrote:
quoted hunk ↗ jump to hunk
This allows devices without a high precission timer to reduce boot from >100s to <30s.diff --git a/drivers/char/hw_random/bcm2835-rng.c b/drivers/char/hw_random/bcm2835-rng.c index 1a7c43b43c6b..4b48cb7176b0 100644 --- a/drivers/char/hw_random/bcm2835-rng.c +++ b/drivers/char/hw_random/bcm2835-rng.c@@ -163,6 +163,7 @@ static int bcm2835_rng_probe(struct platform_device *pdev) priv->rng.init = bcm2835_rng_init; priv->rng.read = bcm2835_rng_read; priv->rng.cleanup = bcm2835_rng_cleanup; + priv->rng.quality = 1000;
Hi Alvero
* @quality: Estimation of true entropy in RNG's bitstream
* (in bits of entropy per 1024 bits of input;
* valid values: 1 to 1024, or 0 for unknown).
How did you determine this device produces 1000 bits of true entropy
per 1024?
Andrew
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