From: Torsten Duwe <duwe@lst.de>
To: u-boot@lists.denx.de
Subject: [PATCH 1/2] lib: uuid: use RNG device if present
Date: Wed, 16 Dec 2020 14:22:03 +0100 [thread overview]
Message-ID: <20201216142203.5a1db229@blackhole.lan> (raw)
In-Reply-To: <20201216104117.10836-2-matthias.bgg@kernel.org>
On Wed, 16 Dec 2020 11:41:16 +0100
matthias.bgg at kernel.org wrote:
> @@ -249,9 +250,22 @@ void gen_rand_uuid(unsigned char *uuid_bin)
> {
> u32 ptr[4];
> struct uuid *uuid = (struct uuid *)ptr;
> - int i;
> -
> - srand(get_ticks() + rand());
> + int i, ret;
> + struct udevice *devp;
> + u8 randv = 0;
> +
> +#if defined(CONFIG_DM_RNG)
> + ret = uclass_get_device(UCLASS_RNG, 0, &devp);
> + if (ret) {
> + ret = dm_rng_read(dev, randv, sizeof(randv));
^ ^
same as patch 2/2
> + if (ret < 0)
> + randv = 0;
> + }
> + if (randv)
> + srand(randv);
> + else
> +#endif
> + srand(get_ticks() + rand());
>
> /* Set all fields randomly */
> for (i = 0; i < 4; i++)
next prev parent reply other threads:[~2020-12-16 13:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-16 10:41 [PATCH 0/2] Use RNG to get random behaviour matthias.bgg at kernel.org
2020-12-16 10:41 ` [PATCH 1/2] lib: uuid: use RNG device if present matthias.bgg at kernel.org
2020-12-16 13:22 ` Torsten Duwe [this message]
2020-12-16 10:41 ` [PATCH 2/2] net: Use NDRNG device in srand_mac() matthias.bgg at kernel.org
2020-12-16 13:20 ` Torsten Duwe
2020-12-16 15:56 ` Matthias Brugger
2020-12-16 13:17 ` [PATCH 0/2] Use RNG to get random behaviour Torsten Duwe
2020-12-16 13:42 ` Peter Robinson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201216142203.5a1db229@blackhole.lan \
--to=duwe@lst.de \
--cc=u-boot@lists.denx.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox