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SubjectRe: [RFC PATCH v2 07/22] ASoC: Add SOC USB APIs for adding an USB backend
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>> +void *snd_soc_usb_get_priv_data(struct device *usbdev)
>> +{
>> + struct snd_soc_usb *ctx;
>> +
>> + if (!usbdev)
>> + return NULL;
>
> How could usbdev ever be NULL?
The method is exported to public, valid check should be reasonable
as someone may call it by mistake

>
>> +
>> + ctx = snd_soc_find_usb_ctx(usbdev);
>> +
>> + return ctx ? ctx->priv_data : NULL;
>> +}
>> +EXPORT_SYMBOL_GPL(snd_soc_usb_get_priv_data);
>> +

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