linux-kernel - Re: [PATCH 1/3] PM / OPP: Add support for descending order for cpufreq table

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 7 May 2014 11:34:32 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Nishanth Menon <nm@...com>
Cc:	Jonghwan Choi <jhbird.choi@...sung.com>,
	Linux PM list <linux-pm@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <len.brown@...el.com>,
	Amit Daniel Kachhap <amit.daniel@...sung.com>
Subject: Re: [PATCH 1/3] PM / OPP: Add support for descending order for
 cpufreq table

On 7 May 2014 06:30, Nishanth Menon <nm@...com> wrote:
> So, we could do [2] as default as well, if it is determined to impact
> no one else making any form of assumptions on table ordering - but it
> might be preferable for drivers not to depend on framework ordering of
> data as things could change in the future.

Exactly and that's what we discussed earlier. I don't want to change the
default behavior at all, as somebody may request the ascending order
tomorrow :)

@Jonghwan: Please consider doing this:
- Don't play with the order of frequencies in table.
- Instead initialize .driver_data filed with values that you need to write
in the registers for all frequencies. i.e. 0 for highest frequency and
FREQ_COUNT-1 for lowest one.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/