From: Russell King - ARM Linux <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
To: Paul Kocialkowski <contact-W9ppeneeCTY@public.gmane.org>
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Hans De Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Subject: Re: [PATCH 2/2] arch: arm: Show the serial number from devicetree in cpuinfo
Date: Thu, 16 Apr 2015 17:05:07 +0100 [thread overview]
Message-ID: <20150416160506.GA12732@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1429179791.2483.13.camel@collins>
On Thu, Apr 16, 2015 at 12:23:11PM +0200, Paul Kocialkowski wrote:
> We could simply check whether the serial-number property is there (when
> DT is enabled at all) and fallback to using serial_low/high when it's
> not the case (which would perhaps be 0), at a later point in
> initialization. If you think init_machine_late is a good fit, then I'll
> go for it.
I do. The only user of the string right now is userspace. We don't
expect the serial number to change over the lifetime of the kernel,
and we expect that it's initialised by the time userspace gets to run.
So, doing this at late_initcall() time seems completely sensible to me.
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next prev parent reply other threads:[~2015-04-16 16:05 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-28 17:39 [PATCH 1/2] Documentation: devicetree: root node serial-number property documentation Paul Kocialkowski
[not found] ` <1427564371-26039-1-git-send-email-contact-W9ppeneeCTY@public.gmane.org>
2015-03-28 17:39 ` [PATCH 2/2] arch: arm: Show the serial number from devicetree in cpuinfo Paul Kocialkowski
[not found] ` <1427564371-26039-2-git-send-email-contact-W9ppeneeCTY@public.gmane.org>
2015-04-16 9:46 ` Russell King - ARM Linux
[not found] ` <20150416094623.GX12732-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2015-04-16 10:23 ` Paul Kocialkowski
2015-04-16 14:37 ` Rob Herring
2015-04-16 16:05 ` Russell King - ARM Linux [this message]
2015-04-14 14:31 ` [PATCH 1/2] Documentation: devicetree: root node serial-number property documentation Paul Kocialkowski
2015-04-16 7:56 ` Stefan Agner
[not found] ` <f6f4f862c78fa626e7f94bde51eec5b1-XLVq0VzYD2Y@public.gmane.org>
2015-04-16 9:10 ` Paul Kocialkowski
2015-04-16 14:36 ` Rob Herring
[not found] ` <CAL_JsqKdHQZL5Z6hKgquKihFykX0ZiCDQfeHOfOZWOh2NMg4Rw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-04-16 15:23 ` Kumar Gala
[not found] ` <CFEF8F54-7A3E-482C-B295-6A6BC5D837C8-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2015-04-16 15:45 ` Paul Kocialkowski
2015-04-16 15:53 ` Kumar Gala
[not found] ` <F4D05489-ACF0-44BB-AEC7-7E8FB83FAE4C-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2015-04-16 18:14 ` Paul Kocialkowski
2015-04-16 18:54 ` Kumar Gala
[not found] ` <B1128C28-AC17-47F6-A64A-FD3197112751-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2015-04-16 19:15 ` Paul Kocialkowski
2015-04-16 19:40 ` Stefan Agner
[not found] ` <97473e9075df185ab3024db70c471f53-XLVq0VzYD2Y@public.gmane.org>
2015-04-16 20:06 ` Paul Kocialkowski
2015-04-16 22:05 ` Stefan Agner
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