[U-Boot] [PATCH v2 03/17] dm: core: Add functions to find parent and OF data

[Simon Glass]

On 19 November 2014 at 02:37, Simon Glass <sjg at chromium.org> wrote:
> Hi Masahiro,
>
> On 19 November 2014 08:27, Masahiro Yamada <yamada.m at jp.panasonic.com> wrote:
>>
>> On Tue, 11 Nov 2014 10:46:19 -0700
>> Simon Glass <sjg at chromium.org> wrote:
>>
>>> Add dev_get_parent() as a convenience to obtain the parent of a device.
>>>
>>> Signed-off-by: Simon Glass <sjg at chromium.org>
>>> ---
>>>
>>> Changes in v2: None
>>>
>>>  drivers/core/device.c | 5 +++++
>>>  include/dm/device.h   | 8 ++++++++
>>>  2 files changed, 13 insertions(+)
>>>
>>> diff --git a/drivers/core/device.c b/drivers/core/device.c
>>> index 0d84776..76b29fd 100644
>>> --- a/drivers/core/device.c
>>> +++ b/drivers/core/device.c
>>> @@ -549,6 +549,11 @@ int device_find_next_child(struct udevice **devp)
>>>       return 0;
>>>  }
>>>
>>> +struct udevice *dev_get_parent(struct udevice *child)
>>> +{
>>> +     return child->parent;
>>> +}
>>> +
>>
>> Why do you want this?  "dev_get_parent(dev)" is longer than "dev->parent".
>>
>> I am not sure if this helper function is useful,
>> but if really necessary, static inline or macro ??
>
> See my comment on the other patch.
>
>>
>>
>> Perhaps,  "struct udevice *dev" rather than "struct udevice *child"
>> for consistency?
>
> Maybe, but I feel this is clearer even if it is inconsistent. I try to
> use 'bus' instead of dev when there is a bus too, to help with
> understanding.
>
> Regards,
> Simon

Applied to u-boot-dm.