linux-kernel - Re: [PATCH] acpi-cpufreq: De-register cpu notifier and free struct msr on error.

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Date:	Mon, 3 Feb 2014 11:52:08 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Konrad Rzeszutek Wilk <konrad@...nel.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	"cpufreq@...r.kernel.org" <cpufreq@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Lukasz Majewski <l.majewski@...sung.com>,
	Myungjoo Ham <myungjoo.ham@...sung.com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>
Subject: Re: [PATCH] acpi-cpufreq: De-register cpu notifier and free struct
 msr on error.

On 28 January 2014 09:28, Konrad Rzeszutek Wilk <konrad@...nel.org> wrote:
> If cpufreq_register_driver() fails we would free the acpi driver
> related structures but not free the ones allocated
> by acpi_cpufreq_boost_init() function. This meant that as
> the driver error-ed out and a CPU online/offline event came
> we would crash and burn as one of the CPU notifiers would point
> to garbage.
>
> This fixes a regression that commit cfc9c8ed03e4d908f2388af8815f44c87b503aaf
> "acpi-cpufreq: Adjust the code to use the common boost attribute"
> introduced.
>
> CC: Lukasz Majewski <l.majewski@...sung.com>
> CC: Myungjoo Ham <myungjoo.ham@...sung.com>
> CC: Viresh Kumar <viresh.kumar@...aro.org>
> CC: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> CC: Boris Ostrovsky <boris.ostrovsky@...cle.com>
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
> ---
>  drivers/cpufreq/acpi-cpufreq.c |    5 +++--
>  1 files changed, 3 insertions(+), 2 deletions(-)

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