Re: [Xen-devel] [RFC PATCH 13/31] xen/arm: Add driver_data field to struct device

[Oleksandr Tyshchenko <olekstysh@xxxxxxxxx>]

Hi, Julien.

On Tue, Dec 5, 2017 at 1:26 PM, Julien Grall <julien.grall@xxxxxxxxxx> wrote:
>
>
> On 09/11/17 17:10, Oleksandr Tyshchenko wrote:
>>
>> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
>
>
> Please explain the rationale behind adding a new field in struct device.

Basically it is needed for the "direct ported" drivers from Linux. I
added this field in order to
make SCPI protocol driver happy. It operates with
platform_set_drvdata/platform_get_drvdata helpers.

Sure, I will add detailed description if we decide to go this way.

>
>>
>> Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
>> CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
>> CC: Julien Grall <julien.grall@xxxxxxxxxx>
>> ---
>>   xen/include/asm-arm/device.h | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/xen/include/asm-arm/device.h b/xen/include/asm-arm/device.h
>> index 6734ae8..3e2f34a 100644
>> --- a/xen/include/asm-arm/device.h
>> +++ b/xen/include/asm-arm/device.h
>> @@ -20,6 +20,7 @@ struct device
>>       struct dt_device_node *of_node; /* Used by drivers imported from
>> Linux */
>>   #endif
>>       struct dev_archdata archdata;
>> +    void *driver_data;
>>   };
>>     typedef struct device device_t;
>>
>
> Cheers,
>
> --
> Julien Grall



-- 
Regards,

Oleksandr Tyshchenko

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