From: swarren@wwwdotorg•org (Stephen Warren)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH] ARM: tegra: throw the unique chip ID into the entropy pool
Date: Fri, 13 Sep 2013 10:33:26 -0600 [thread overview]
Message-ID: <52333E56.8060204@wwwdotorg.org> (raw)
In-Reply-To: <1378394938-1551-1-git-send-email-linus.walleij@linaro.org>
On 09/05/2013 09:28 AM, Linus Walleij wrote:
> This adds a hook at common late init to extract the 64 bits of
> chip-unique data and throw it into the entropy pool to make it
> more device-unique.
> diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c
> void __init tegra_init_late(void)
> {
> + tegra_random_init();
Looking at this further, there's already a tegra_init_fuse() call made
from tegra_init_early(), so rather than adding a second init function
into the fuse code, I'd rather just augment that function, unless
there's some reason add_device_randomness() won't work at that time?
If that will work, I'll supply an alternate patch that replaces this,
since I also want to remove the tegra_chip_uid() function, and need to
make the add_device_randomness() call not use tegra_chip_uid() on
Tegra30 or later, since the set of fuses for the chip ID changed radically.
next prev parent reply other threads:[~2013-09-13 16:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-05 15:28 [PATCH] ARM: tegra: throw the unique chip ID into the entropy pool Linus Walleij
2013-09-05 19:43 ` Stephen Warren
2013-09-06 8:53 ` Linus Walleij
2013-09-06 19:09 ` Stephen Warren
2013-09-13 16:33 ` Stephen Warren [this message]
2013-09-15 9:24 ` Linus Walleij
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=52333E56.8060204@wwwdotorg.org \
--to=swarren@wwwdotorg$(echo .)org \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
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