linux-kernel - Re: [PATCH] cpufreq: return EEXIST instead of EBUSY for second registering

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]

Message-ID: <CAKohpomt+sASL=2i-v=HSkhOZhbPmnFesEfPoEqSE+WKcCfnmw@mail.gmail.com>
Date:	Thu, 19 Sep 2013 09:38:32 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	"cpufreq@...r.kernel.org" <cpufreq@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cpufreq: return EEXIST instead of EBUSY for second registering

On 19 September 2013 09:35, Yinghai Lu <yinghai@...nel.org> wrote:
> System that cpu support intel_pstate, acpi_cpufreq fail to
> load, and udev keep trying until trace get filled up and
> kernel crash.
>
> The root cause is driver return ret from cpufreq_register_driver
> and when some other driver take over before, it would return
> EBUSY, then udev will keep trying...
>
> cpufreq_register_driver should return EEXIST instead.
> then system could boot without appending intel_pstate=disable
> and still use intel_pstate.
>
> Signed-off-by: Yinghai Lu <yinghai@...nel.org>

Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
--
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/