diff mbox series

[v7,1/3] scmi-cpufreq: Remove deferred probe

Message ID 20210215075139.30772-2-nicola.mazzucato@arm.com (mailing list archive)
State New
Delegated to: viresh kumar
Headers show
Series CPUFreq: Add support for opp-sharing cpus | expand

Commit Message

Nicola Mazzucato Feb. 15, 2021, 7:51 a.m. UTC
The current implementation of the scmi_cpufreq_init() function returns
-EPROBE_DEFER when the OPP table is not populated. In practice the
cpufreq core cannot handle this error code.
Therefore, fix the return value and clarify the error message.

Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com>
Signed-off-by: Nicola Mazzucato <nicola.mazzucato@arm.com>
---
 drivers/cpufreq/scmi-cpufreq.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

Comments

Viresh Kumar Feb. 18, 2021, 10:35 a.m. UTC | #1
On 15-02-21, 07:51, Nicola Mazzucato wrote:
> The current implementation of the scmi_cpufreq_init() function returns
> -EPROBE_DEFER when the OPP table is not populated. In practice the
> cpufreq core cannot handle this error code.
> Therefore, fix the return value and clarify the error message.
> 
> Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com>
> Signed-off-by: Nicola Mazzucato <nicola.mazzucato@arm.com>
> ---
>  drivers/cpufreq/scmi-cpufreq.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c
> index 491a0a24fb1e..34bf2eb8d465 100644
> --- a/drivers/cpufreq/scmi-cpufreq.c
> +++ b/drivers/cpufreq/scmi-cpufreq.c
> @@ -155,9 +155,11 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
>  
>  	nr_opp = dev_pm_opp_get_opp_count(cpu_dev);
>  	if (nr_opp <= 0) {
> -		dev_dbg(cpu_dev, "OPP table is not ready, deferring probe\n");
> -		ret = -EPROBE_DEFER;
> -		goto out_free_opp;

Why change goto label as well ?

> +		dev_err(cpu_dev, "%s: No OPPs for this device: %d\n",
> +			__func__, ret);
> +
> +		ret = -ENODEV;
> +		goto out_free_priv;
>  	}
>  
>  	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
> -- 
> 2.27.0
Nicola Mazzucato Feb. 18, 2021, 1:01 p.m. UTC | #2
Hi Viresh,


On 2/18/21 10:35 AM, Viresh Kumar wrote:
> On 15-02-21, 07:51, Nicola Mazzucato wrote:
>> The current implementation of the scmi_cpufreq_init() function returns
>> -EPROBE_DEFER when the OPP table is not populated. In practice the
>> cpufreq core cannot handle this error code.
>> Therefore, fix the return value and clarify the error message.
>>
>> Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com>
>> Signed-off-by: Nicola Mazzucato <nicola.mazzucato@arm.com>
>> ---
>>  drivers/cpufreq/scmi-cpufreq.c | 8 +++++---
>>  1 file changed, 5 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c
>> index 491a0a24fb1e..34bf2eb8d465 100644
>> --- a/drivers/cpufreq/scmi-cpufreq.c
>> +++ b/drivers/cpufreq/scmi-cpufreq.c
>> @@ -155,9 +155,11 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
>>  
>>  	nr_opp = dev_pm_opp_get_opp_count(cpu_dev);
>>  	if (nr_opp <= 0) {
>> -		dev_dbg(cpu_dev, "OPP table is not ready, deferring probe\n");
>> -		ret = -EPROBE_DEFER;
>> -		goto out_free_opp;
> 
> Why change goto label as well ?

oops! thanks for spotting this :)

> 
>> +		dev_err(cpu_dev, "%s: No OPPs for this device: %d\n",
>> +			__func__, ret);
>> +
>> +		ret = -ENODEV;
>> +		goto out_free_priv;
>>  	}
>>  
>>  	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
>> -- 
>> 2.27.0
>
diff mbox series

Patch

diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c
index 491a0a24fb1e..34bf2eb8d465 100644
--- a/drivers/cpufreq/scmi-cpufreq.c
+++ b/drivers/cpufreq/scmi-cpufreq.c
@@ -155,9 +155,11 @@  static int scmi_cpufreq_init(struct cpufreq_policy *policy)
 
 	nr_opp = dev_pm_opp_get_opp_count(cpu_dev);
 	if (nr_opp <= 0) {
-		dev_dbg(cpu_dev, "OPP table is not ready, deferring probe\n");
-		ret = -EPROBE_DEFER;
-		goto out_free_opp;
+		dev_err(cpu_dev, "%s: No OPPs for this device: %d\n",
+			__func__, ret);
+
+		ret = -ENODEV;
+		goto out_free_priv;
 	}
 
 	priv = kzalloc(sizeof(*priv), GFP_KERNEL);