Re: [PATCH] cpufreq: cpufreq_register_driver should return -ENODEV if init fails

[Viresh Kumar <viresh.kumar@linaro.org>]

You sent it to the wrong list and missed Rafael too. MAINTAINERS file should
help getting these details in the future.

On 26-05-17, 11:37, David Arcari wrote:
> For a driver that does not set the CPUFREQ_STICKY flag, if all of the
> ->init() calls fail, cpufreq_register_driver() should return an error.
> This will prevent the driver from loading.
> 
> Fixes: ce1bcfe94db8 ("cpufreq: check cpufreq_policy_list instead of scanning policies for all CPUs")
> 
> Cc: Viresh Kumar <viresh.kumar@linaro.org>
> Signed-off-by: David Arcari <darcari@redhat.com>

+
Cc: 4.0+ <stable@vger.kernel.org> # 4.0+

> ---
>  drivers/cpufreq/cpufreq.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
> index 0e3f649..26b643d 100644
> --- a/drivers/cpufreq/cpufreq.c
> +++ b/drivers/cpufreq/cpufreq.c
> @@ -2468,6 +2468,7 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
>  	if (!(cpufreq_driver->flags & CPUFREQ_STICKY) &&
>  	    list_empty(&cpufreq_policy_list)) {
>  		/* if all ->init() calls failed, unregister */
> +		ret = -ENODEV;
>  		pr_debug("%s: No CPU initialized for driver %s\n", __func__,
>  			 driver_data->name);
>  		goto err_if_unreg;

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

-- 
viresh