| Message ID | 20210220195748.3153-1-noltari@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v2] hwrng: bcm2835: set quality to 1000 | expand |
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; if (dev_of_node(dev)) { rng_id = of_match_node(bcm2835_rng_of_match, dev->of_node);
This allows devices without a high precission timer to speed up boot from more 100 s to lest than 30s. Justification: root@OpenWrt:/# cat /dev/hwrng | rngtest -c 1000 rngtest 6.10 Copyright (c) 2004 by Henrique de Moraes Holschuh This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. rngtest: starting FIPS tests... rngtest: bits received from input: 20000032 rngtest: FIPS 140-2 successes: 996 rngtest: FIPS 140-2 failures: 4 rngtest: FIPS 140-2(2001-10-10) Monobit: 0 rngtest: FIPS 140-2(2001-10-10) Poker: 0 rngtest: FIPS 140-2(2001-10-10) Runs: 1 rngtest: FIPS 140-2(2001-10-10) Long run: 3 rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 rngtest: input channel speed: (min=146.002; avg=349.394; max=1302083.333)Kibits/s rngtest: FIPS tests speed: (min=12.126; avg=22.750; max=23.432)Mibits/s rngtest: Program run time: 56826982 microseconds 996 successes and 4 failures -> 99.6% success rate 1024 * 99.6% = 1019 (rounded down to 1000) Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> --- v2: add jusftification drivers/char/hw_random/bcm2835-rng.c | 1 + 1 file changed, 1 insertion(+)