On 2014年06月17日 09:27, David Rientjes wrote:
> On Mon, 16 Jun 2014, Lan Tianyu wrote:
>
>>>> How about this?
>>>>
>>>> - result = acpi_battery_update(battery, false);
>>>> - if (result)
>>>> +
>>>> + /*
>>>> + * Some machines'(E,G Lenovo Z480) ECs are not stable
>>>> + * during boot up and this causes battery driver fails to be
>>>> + * probed due to failure of getting battery information
>>>> + * from EC sometimes. After several retries, the operation
>>>> + * may work. So add retry code here and 20ms sleep between
>>>> + * every retries.
>>>> + */
>>>> + while (acpi_battery_update(battery, false) && retry--)
>>>> + msleep(20);
>>>> + if (!retry) {
>>>> + result = -ENODEV;
>>>> goto fail;
>>>> + }
>>>> +
>>>
>>> I think you want --retry and not retry--.
>>
>> My original purpose is to retry 5 times after the first try fails.
>> If use "--retry" here, it just retries 4 times.
>>
>>> Otherwise it's possible for the
>>> final call to acpi_battery_update() to succeed and now it's returning
>>> -ENODEV.
>>>
>>
>> Yes, it maybe and I will change code like the following.
>>
>> while ((result = acpi_battery_update(battery, false)) && retry--)
>> msleep(20);
>> if (result)
>> goto fail;
>>
>
> Looks good.
>
Great. Thanks for review. :)
--
Best regards
Tianyu Lan
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