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SubjectRe: [PATCH 1/4] of/device: Add a way to probe drivers by match data
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On 11/9/18 2:36 AM, Geert Uytterhoeven wrote:
> Hi Matthias,
>
> On Fri, Nov 9, 2018 at 11:29 AM Matthias Brugger <matthias.bgg@gmail.com> wrote:
>> On 08/11/2018 18:58, Stephen Boyd wrote:
>>> Quoting Matthias Brugger (2018-11-08 00:29:46)
>>>> On 06/11/2018 19:36, Stephen Boyd wrote:
>>>>> +int platform_driver_probe_by_of_match_data(struct platform_device *pdev)
>>>>> +{
>>>>> + int (*probe_func)(struct platform_device *pdev);
>>>>> +
>>>>> + probe_func = of_device_get_match_data(&pdev->dev);
>>>>
>>>> Shouldn't we check if probe_func is not NULL?
>>>
>>> Is the oops from the NULL pointer deref insufficient?
>>
>> Do you think we should crash the machine if someone uses the call wrongly? Or
>> should we provide the possibility to error out on the caller side?
>
> I believe that would be a bug in the driver, to be discovered ASAP.
> So yes, please do crash ;-)

This is one of Linus' pet peeves. He does not think crashing the
machine is the proper choice (as a general statement).

-Frank

>
> Gr{oetje,eeting}s,
>
> Geert
>

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