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Re: [PATCH RESEND 2/2] wlcore: align member-assigns in a structure-copy block

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On Sun, Jan 11, 2015 at 12:22:49 +0200, Eliad Peller wrote:
> On Fri, Jan 9, 2015 at 7:03 PM, Kalle Valo <kvalo@xxxxxxxxxxxxxx> wrote:
>> Giel van Schijndel <me@xxxxxxxxx> writes:
>>> This highlights the differences (e.g. the bug fixed in the previous
>>> commit).
>>>
>>> Signed-off-by: Giel van Schijndel <me@xxxxxxxxx>
>>> ---
>>>  drivers/net/wireless/ti/wlcore/acx.c | 22 +++++++++++-----------
>>>  1 file changed, 11 insertions(+), 11 deletions(-)
>>>
>>> diff --git a/drivers/net/wireless/ti/wlcore/acx.c b/drivers/net/wireless/ti/wlcore/acx.c
>>> index f28fa3b..93a2fa8 100644
>>> --- a/drivers/net/wireless/ti/wlcore/acx.c
>>> +++ b/drivers/net/wireless/ti/wlcore/acx.c
>>> @@ -1715,17 +1715,17 @@ int wl12xx_acx_config_hangover(struct wl1271 *wl)
>>>               goto out;
>>>       }
>>>
>>> -     acx->recover_time = cpu_to_le32(conf->recover_time);
>>> -     acx->hangover_period = conf->hangover_period;
>>> -     acx->dynamic_mode = conf->dynamic_mode;
>>> -     acx->early_termination_mode = conf->early_termination_mode;
>>> -     acx->max_period = conf->max_period;
>>> -     acx->min_period = conf->min_period;
>>> -     acx->increase_delta = conf->increase_delta;
>>> -     acx->decrease_delta = conf->decrease_delta;
>>> -     acx->quiet_time = conf->quiet_time;
>>> -     acx->increase_time = conf->increase_time;
>>> -     acx->window_size = conf->window_size;
>>> +     acx->recover_time               = cpu_to_le32(conf->recover_time);
>>> +     acx->hangover_period            = conf->hangover_period;
>>> +     acx->dynamic_mode               = conf->dynamic_mode;
>>> +     acx->early_termination_mode     = conf->early_termination_mode;
>>> +     acx->max_period                 = conf->max_period;
>>> +     acx->min_period                 = conf->min_period;
>>> +     acx->increase_delta             = conf->increase_delta;
>>> +     acx->decrease_delta             = conf->decrease_delta;
>>> +     acx->quiet_time                 = conf->quiet_time;
>>> +     acx->increase_time              = conf->increase_time;
>>> +     acx->window_size                = conf->window_size;
>>
>> I would like to get an ACK from one of the wlcore developers if I should
>> apply this (or not).
>>
> I don't have a strong opinion here.
> However, it looks pretty much redundant to take a random blob (which
> was just fixed by a correct patch) and re-indent it.
> The rest of the file doesn't follow this style, so i don't see a good
> reason to apply it here.
> 
> I agree such indentation have some benefit, but it won't help with the
> more common use case (of copy-paste error) of copying the wrong field
> (i.e. D->a = S->b instead of D->a = S->a).
> For these cases the macros suggested by Arend and Johannes will do the
> trick. However i usually dislike such macros, as they tend to break
> some IDE features (e.g. auto completion).
> Maybe we can come up with some nice spatch to catch these cases.

What I dislike about those macros is just that they're not as familiar
to any C programmer as the assignment operator, so they make the code
less readable (even if just a little bit).

As for the IDE thing: I try not to use them, but have been told (by
colleagues) that Eclipse is reasonably smart about macros in C. I use
VIM with the clang_complete plugin and that does do proper completion
with expressions containing macros, but not inside macros based on what
the macro expansion would be, like the one above.

That's why I believe this kind of alignment is at least *an* improvement
even if it doesn't solve all possible problems.

-- 
Met vriendelijke groet,
With kind regards,
Giel van Schijndel
--
"Question: what do you call your programming methodology?
 Answer: Faith based development. You code and then pray that it works."
  -- John Spelner

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