linux-kernel - Re: [PATCH 11/31] clk: mediatek: mux: Clean up included headers

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Date:   Wed, 26 Jan 2022 01:38:36 +0800
From:   Miles Chen <miles.chen@...iatek.com>
To:     <wenst@...omium.org>
CC:     <chun-jie.chen@...iatek.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <matthias.bgg@...il.com>,
        <mturquette@...libre.com>, <sboyd@...nel.org>
Subject: Re: [PATCH 11/31] clk: mediatek: mux: Clean up included headers

> Some included headers aren't actually used anywhere, while other headers
> with the declaration of functions and structures aren't directly
> included.
> 
> Get rid of the unused ones, and add the ones that should be included
> directly.
> 
> On the header side, replace headers that are included purely for data
> structure definitions with forward declarations. This decreases the
> amount of preprocessing and compilation effort required for each
> inclusion.

Is this inspired by [1]?
[1] https://lore.kernel.org/lkml/YdIfz+LMewetSaEB@gmail.com/ 

> 
> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
>
Reviewed-by: Miles Chen <miles.chen@...iatek.com>
> ---
>  drivers/clk/mediatek/clk-mux.c | 11 +++++++----
>  drivers/clk/mediatek/clk-mux.h |  8 +++++++-
>  2 files changed, 14 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/clk/mediatek/clk-mux.c b/drivers/clk/mediatek/clk-mux.c
> index 2d4d8dc0120a..01af6a52711a 100644
> --- a/drivers/clk/mediatek/clk-mux.c
> +++ b/drivers/clk/mediatek/clk-mux.c
> @@ -4,13 +4,16 @@
>   * Author: Owen Chen <owen.chen@...iatek.com>
>   */
>  
> -#include <linux/of.h>
> -#include <linux/of_address.h>
> -#include <linux/slab.h>
> +#include <linux/clk-provider.h>
> +#include <linux/compiler_types.h>
> +#include <linux/container_of.h>
> +#include <linux/err.h>
>  #include <linux/mfd/syscon.h>
>  #include <linux/module.h>
> +#include <linux/regmap.h>
> +#include <linux/spinlock.h>
> +#include <linux/slab.h>
>  
> -#include "clk-mtk.h"
>  #include "clk-mux.h"
>  
>  struct mtk_clk_mux {
> diff --git a/drivers/clk/mediatek/clk-mux.h b/drivers/clk/mediatek/clk-mux.h
> index 38a2b6014b08..903a3c937959 100644
> --- a/drivers/clk/mediatek/clk-mux.h
> +++ b/drivers/clk/mediatek/clk-mux.h
> @@ -7,7 +7,13 @@
>  #ifndef __DRV_CLK_MTK_MUX_H
>  #define __DRV_CLK_MTK_MUX_H
>  
> -#include <linux/clk-provider.h>
> +#include <linux/spinlock.h>
> +#include <linux/types.h>
> +
> +struct clk;
> +struct clk_onecell_data;
> +struct clk_ops;
> +struct device_node;
>  
>  struct mtk_mux {
>  	int id;
> -- 
> 2.35.0.rc0.227.g00780c9af4-goog