linux-kernel - Re: [Outreachy kernel] [PATCH v3] staging: media: atomisp: pci: Change line break to avoid an open parenthesis at the end of the line

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Message-ID: <d2cfc472-d3ac-fd47-aa0c-ed6414f671fc@xs4all.nl>
Date:   Fri, 23 Apr 2021 11:21:57 +0200
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Aline Santana Cordeiro <alinesantanacordeiro@...il.com>,
        Julia Lawall <julia.lawall@...ia.fr>,
        Matthew Wilcox <willy@...radead.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org, outreachy-kernel@...glegroups.com
Subject: Re: [Outreachy kernel] [PATCH v3] staging: media: atomisp: pci:
 Change line break to avoid an open parenthesis at the end of the line

On 21/04/2021 16:21, Aline Santana Cordeiro wrote:
> Em qua, 2021-04-21 às 15:56 +0200, Julia Lawall escreveu:
>>
>>
>> On Wed, 21 Apr 2021, Aline Santana Cordeiro wrote:
>>
>>> Em qua, 2021-04-21 às 15:08 +0200, Julia Lawall escreveu:
>>>>
>>>>
>>>> On Wed, 21 Apr 2021, Aline Santana Cordeiro wrote:
>>>>
>>>>> Change line break to avoid an open parenthesis at the end of
>>>>> the
>>>>> line.
>>>>> It consequently removed spaces at the start of the subsequent
>>>>> line.
>>>>
>>>> The message is hard to understand.  There are a lot of singular
>>>> nouns, but
>>>> actually there are two changes.  Which change is being described
>>>> by
>>>> the
>>>> above message?  What does "It" refer to?
>>>>
>>>> julia
>>>
>>> Checkpatch indicated two problems with this function declaration:
>>> 1) The line ending with an open parenthesis, and
>>> 2) The following line - with the function parameters - has spaces
>>> in
>>> its identation.
>>>
>>> When I changed the line break to put the function name and its
>>> parameter in the following line, both checkpath checks were
>>> eliminated.
>>>
>>> So, the main change was the line break and, also, the line break
>>> (it)
>>> removed the space in the following line.
>>>
>>> Is it better to change the message and explain only about the line
>>> break?
>>
>> The message should explain about the whole patch.  So if you change
>> two
>> things, it should be clear that what you are saying covers both of
>> them.
> 
> Ok, I can do that. In the commit message I described just one issue
> because it is only one patch, I didn't want it to look like I was
> changing different issues in just one patch.
> 
>>
>> But it seems that Matthew doesn't think that the line break is a good
>> idea
>> anyway.
> 
> Yes, I'm sending this email to Matthew too, because I don't know
> exactly how to proceed as Hans asked me to made some corrections too. 
> I've made these changes because checkpatch has indicated and with this
> line break, checkpatch does not indicate any check or warning anymore.
> But I can undo that too, I just don't know what I'm supposed to do with
> so many opposite opinions. 

As one of the media maintainers I can say that in this case the preference
would be to split it up in two lines. It's one of those areas where
different maintainers have different opinions.

Just keep in mind that this is all nitpicking and normally we probably
wouldn't bother with this at all, but it is a good exercise to learn
about patches and contributing :-)

Regards,

	Hans

> 
> 
> Thank you all,
> Aline 
>>
>> julia
>>
>>>
>>> Thank you,
>>> Aline
>>>>
>>>>
>>>>> Both issues detected by checkpatch.pl.
>>>>>
>>>>> Signed-off-by: Aline Santana Cordeiro <
>>>>> alinesantanacordeiro@...il.com>
>>>>> ---
>>>>>
>>>>> Changes since v2:
>>>>>  - Insert a space between the function type and pointer
>>>>>
>>>>> Changes since v1:
>>>>>  - Keep the pointer with the function return type
>>>>>    instead of left it with the function name
>>>>>
>>>>>  drivers/staging/media/atomisp/pci/atomisp_cmd.h | 10 +++++----
>>>>> -
>>>>>  1 file changed, 5 insertions(+), 5 deletions(-)
>>>>>
>>>>> diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.h
>>>>> b/drivers/staging/media/atomisp/pci/atomisp_cmd.h
>>>>> index 1c0d464..639eca3 100644
>>>>> --- a/drivers/staging/media/atomisp/pci/atomisp_cmd.h
>>>>> +++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.h
>>>>> @@ -75,8 +75,8 @@ void atomisp_wdt(struct timer_list *t);
>>>>>  void atomisp_setup_flash(struct atomisp_sub_device *asd);
>>>>>  irqreturn_t atomisp_isr(int irq, void *dev);
>>>>>  irqreturn_t atomisp_isr_thread(int irq, void *isp_ptr);
>>>>> -const struct atomisp_format_bridge
>>>>> *get_atomisp_format_bridge_from_mbus(
>>>>> -    u32 mbus_code);
>>>>> +const struct atomisp_format_bridge *
>>>>> +get_atomisp_format_bridge_from_mbus(u32 mbus_code);
>>>>>  bool atomisp_is_mbuscode_raw(uint32_t code);
>>>>>  int atomisp_get_frame_pgnr(struct atomisp_device *isp,
>>>>>                            const struct ia_css_frame *frame,
>>>>> u32
>>>>> *p_pgnr);
>>>>> @@ -381,9 +381,9 @@ enum mipi_port_id __get_mipi_port(struct
>>>>> atomisp_device *isp,
>>>>>
>>>>>  bool atomisp_is_vf_pipe(struct atomisp_video_pipe *pipe);
>>>>>
>>>>> -void atomisp_apply_css_parameters(
>>>>> -    struct atomisp_sub_device *asd,
>>>>> -    struct atomisp_css_params *css_param);
>>>>> +void atomisp_apply_css_parameters(struct atomisp_sub_device
>>>>> *asd,
>>>>> +                                 struct atomisp_css_params
>>>>> *css_param);
>>>>> +
>>>>>  void atomisp_free_css_parameters(struct atomisp_css_params
>>>>> *css_param);
>>>>>
>>>>>  void atomisp_handle_parameter_and_buffer(struct
>>>>> atomisp_video_pipe
>>>>> *pipe);
>>>>> --
>>>>> 2.7.4
>>>>>
>>>>> --
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>>>>> To view this discussion on the web visit
>>>>> https://groups.google.com/d/msgid/outreachy-kernel/20210421123718.GA4597%40focaruja
>>>>> .
>>>>>
>>>
>>>
>>> --
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> 
>