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From: Len Brown <lenb@kernel.org>
To: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: linux-acpi@vger.kernel.org,
	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Subject: Re: [PATCH]  Avoid wiping out pr->performance during preregistering
Date: Fri, 27 Mar 2009 21:15:23 -0400 (EDT)	[thread overview]
Message-ID: <alpine.LFD.2.00.0903272113550.26419@localhost.localdomain> (raw)
In-Reply-To: <20090324134159.4c83b445@dhcp-lab-109.englab.brq.redhat.com>


On Tue, 24 Mar 2009, Stanislaw Gruszka wrote:

> When cpufreq driver call acpi_processor_preregister_performance() , function
> will clean up pr->performance even if there is possibly already registered
> other cpufreq driver. The patch fix this potential problem. It also remove 
> double checks in P domain basic validity code and move these checks to function
> where _PSD data is captured.
> 
> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
> ---
>  drivers/acpi/processor_perflib.c |   46 +++++++++++++++++--------------------
>  1 files changed, 21 insertions(+), 25 deletions(-)
> 

What failure symptom does the user see before this patch is applied?
Does it merit backporting to .stable?

thanks,
Len Brown, Intel Open Source Technology Center



  reply	other threads:[~2009-03-28  1:15 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-24 12:41 [PATCH] Avoid wiping out pr->performance during preregistering Stanislaw Gruszka
2009-03-28  1:15 ` Len Brown [this message]
2009-03-30  8:04   ` Stanislaw Gruszka

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