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Subject: Re: [PATCH 1/4] of/device: Add a way to probe drivers by match data
To:     Stephen Boyd <sboyd@kernel.org>,
        Michael Turquette <mturquette@baylibre.com>
Cc:     linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-clk@vger.kernel.org, linux-mediatek@lists.infradead.org,
        devicetree@vger.kernel.org, Ryder Lee <ryder.lee@mediatek.com>,
        Rob Herring <robh+dt@kernel.org>,
        Frank Rowand <frowand.list@gmail.com>
References: <20181106183609.207702-1-sboyd@kernel.org>
 <20181106183609.207702-2-sboyd@kernel.org>
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From:   Matthias Brugger <matthias.bgg@gmail.com>
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Date:   Fri, 9 Nov 2018 11:29:34 +0100
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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?

Regards,
Matthias