linux-kernel - Re: [PATCH 3/3] iio: light: rohm-bu27034: remove unused struct 'bu27034

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Date: Thu, 23 May 2024 08:50:22 +0300
From: Matti Vaittinen <mazziesaccount@...il.com>
To: linux@...blig.org, jic23@...nel.org, lars@...afoo.de,
 marius.cristea@...rochip.com
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] iio: light: rohm-bu27034: remove unused struct
 'bu27034_result'

Thanks David!

On 5/23/24 02:04, linux@...blig.org wrote:
> From: "Dr. David Alan Gilbert" <linux@...blig.org>
> 
> 'bu27034_result' is unused since the original
> commit e52afbd61039 ("iio: light: ROHM BU27034 Ambient Light Sensor").
> 
> Remove it.
> 
> Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>

As I wrote earlier, this driver in it's current form is pretty much 
useless. The BU27034NUC was cancelled and, as far as I know, never 
produced "en masse". The replacement, BU27034ANUC, has undergone 
somewhat meaningful changes like removal of one of the data channels - 
so this driver is not producing correct results on that IC.

I have promised to rework this driver to support the new variant, and I 
have this new HW on my table - but I am currently negotiating to be able 
to provide an open-source Lux calculation formula in the driver... This 
is causing some slight delay.

So, I think applying this patch is still worth :)

Acked-by: Matti Vaittinen <mazziesaccount@...il.com>

> ---
>   drivers/iio/light/rohm-bu27034.c | 6 ------
>   1 file changed, 6 deletions(-)
> 
> diff --git a/drivers/iio/light/rohm-bu27034.c b/drivers/iio/light/rohm-bu27034.c
> index bf3de853a811..4937bf6fa046 100644
> --- a/drivers/iio/light/rohm-bu27034.c
> +++ b/drivers/iio/light/rohm-bu27034.c
> @@ -223,12 +223,6 @@ struct bu27034_data {
>   	} scan;
>   };
>   
> -struct bu27034_result {
> -	u16 ch0;
> -	u16 ch1;
> -	u16 ch2;
> -};
> -
>   static const struct regmap_range bu27034_volatile_ranges[] = {
>   	{
>   		.range_min = BU27034_REG_SYSTEM_CONTROL,

-- 
Matti Vaittinen
Linux kernel developer at ROHM Semiconductors
Oulu Finland

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