Re: [PATCH -next] powernv: cpufreq: Fix uninitialized lpstate_idx in gpstates_timer_handler

[Rafael J. Wysocki]

On Monday, November 14, 2016 05:29:27 PM Akshay Adiga wrote:
> lpstate_idx remains uninitialized in the case when elapsed_time
> is greater than MAX_RAMP_DOWN_TIME. At the end of rampdown
> global pstate should be equal to local pstate.
> 
> Fixes: 20b15b766354 ("cpufreq: powernv: Use PMCR to verify global and
> localpstate")
> Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> Signed-off-by: Akshay Adiga <akshay.adiga@xxxxxxxxxxxxxxxxxx>
> ---
>  drivers/cpufreq/powernv-cpufreq.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
> index c82304b..c5c5bc3 100644
> --- a/drivers/cpufreq/powernv-cpufreq.c
> +++ b/drivers/cpufreq/powernv-cpufreq.c
> @@ -624,6 +624,7 @@ void gpstate_timer_handler(unsigned long data)
>  
>  	if (gpstates->elapsed_time > MAX_RAMP_DOWN_TIME) {
>  		gpstate_idx = pstate_to_idx(freq_data.pstate_id);
> +		lpstate_idx = gpstate_idx;
>  		reset_gpstates(policy);
>  		gpstates->highest_lpstate_idx = gpstate_idx;
>  	} else {
> 

Applied.

Thanks,
Rafael