Re: [PATCH] Avoid wiping out pr->performance during preregistering

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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@xxxxxxxxxx>
> ---
>  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


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