lkml.org 
[lkml]   [2022]   [Jul]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH v6 11/13] leds: rgb: mt6370: Add MediaTek MT6370 current sink type LED Indicator support
On Tue, Jul 26, 2022 at 8:18 PM Andy Shevchenko
<andy.shevchenko@gmail.com> wrote:

...

> > Just for saving memory space.
> > Because these led_classdevs do not be used at the same time.
> > Or do you think it would be better to rewrite it as follows?
> > -------------------------------------------------------------------------------------
> > struct mt6370_led {
> > struct led_classdev isink;
> > struct led_classdev_mc mc;
> > struct mt6370_priv *priv;
> > u32 default_state;
> > u32 index;
> > };
> > -------------------------------------------------------------------------------------
>
> You obviously didn't get what I'm talking about...
> Each union to work properly should have an associated variable that
> holds the information of which field of the union is in use. Do you
> have such a variable? If not, how does your code know which one to
> use? If yes, add a proper comment there.
>

Ummm... from my understanding,
if the colors of these four LEDs are set to 'LED_COLOR_ID_RGB' or
'LED_COLOR_ID_MULTI' in DT,
their 'led->index' will be set to 'MT6370_VIRTUAL_MULTICOLOR' in
'mt6370_leds_probe()'.
If so, these led devices will be set as 'struct led_classdev_mc' and
use related ops functions in 'mt6370_init_led_properties()'.
Instead, they whose 'led->index' is not 'MT6370_VIRTUAL_MULTICOLOR'
will be set as 'struct led_classdev'.
So, maybe the member 'index' of the 'struct mt6370_led' is what you
describe the information of which field of the union is in use?
I will add the proper comment here to describe this thing. I'm so
sorry for misunderstanding your mean last time.
Thanks again for your review.

--
Best Regards,
ChiaEn Wu

\
 
 \ /
  Last update: 2022-07-27 09:38    [W:2.082 / U:1.276 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site