Re: [PATCH] cpufreq: Fixed kernel crash caused by cpufreq issues

[Viresh Kumar]

On 11-04-24, 16:18, Lizhe wrote:
> When the cpufreq_driver does not provide an exit() function.
> cpufreq offline operations can result in a kernel crash.
> 
> Signed-off-by: Lizhe <sensor1010@xxxxxxx>
> ---
>  drivers/cpufreq/cpufreq.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
> index 04d349372de3..e8660bc7d232 100644
> --- a/drivers/cpufreq/cpufreq.c
> +++ b/drivers/cpufreq/cpufreq.c
> @@ -1739,7 +1739,7 @@ static void cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
>  	}
>  
>  	/* We did light-weight exit earlier, do full tear down now */
> -	if (cpufreq_driver->offline)
> +	if (cpufreq_driver->offline && cpufreq_driver->exit)
>  		cpufreq_driver->exit(policy);
>  
>  	up_write(&policy->rwsem);

Hmm, saw this just now.

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

-- 
viresh