linux-kernel - Re: [PATCH 05/19] clk: bcm/kona: Remove ccu

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Date:	Wed, 06 May 2015 08:23:35 -0500
From:	Alex Elder <elder@...aro.org>
To:	Stephen Boyd <sboyd@...eaurora.org>,
	Mike Turquette <mturquette@...aro.org>
CC:	linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
	Tim Kryger <tim.kryger@...aro.org>
Subject: Re: [PATCH 05/19] clk: bcm/kona: Remove ccu_list

On 05/06/2015 02:39 AM, Stephen Boyd wrote:
> This list doesn't look to be used. Let's remove it and any
> associated code that would be manipulating this list. This also
> silences this error:
> 
> drivers/clk/bcm/clk-kona-setup.c:24:1: warning: symbol 'ccu_list' was not declared. Should it be static?

It should have been static.  And I thought it would be used
but it's not, so I agree, it's not serving any real purpose.

Reviewed-by: Alex Elder <elder@...aro.org>

> Cc: Alex Elder <elder@...aro.org>
> Cc: Tim Kryger <tim.kryger@...aro.org>
> Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
> ---
>  drivers/clk/bcm/clk-kona-setup.c | 4 ----
>  drivers/clk/bcm/clk-kona.h       | 2 --
>  2 files changed, 6 deletions(-)
> 
> diff --git a/drivers/clk/bcm/clk-kona-setup.c b/drivers/clk/bcm/clk-kona-setup.c
> index e5aededdd322..deaa7f962b84 100644
> --- a/drivers/clk/bcm/clk-kona-setup.c
> +++ b/drivers/clk/bcm/clk-kona-setup.c
> @@ -21,8 +21,6 @@
>  #define selector_clear_exists(sel)	((sel)->width = 0)
>  #define trigger_clear_exists(trig)	FLAG_CLEAR(trig, TRIG, EXISTS)
>  
> -LIST_HEAD(ccu_list);	/* The list of set up CCUs */
> -
>  /* Validity checking */
>  
>  static bool ccu_data_offsets_valid(struct ccu_data *ccu)
> @@ -773,7 +771,6 @@ static void kona_ccu_teardown(struct ccu_data *ccu)
>  
>  	of_clk_del_provider(ccu->node);	/* safe if never added */
>  	ccu_clks_teardown(ccu);
> -	list_del(&ccu->links);
>  	of_node_put(ccu->node);
>  	ccu->node = NULL;
>  	iounmap(ccu->base);
> @@ -847,7 +844,6 @@ void __init kona_dt_ccu_setup(struct ccu_data *ccu,
>  		goto out_err;
>  	}
>  	ccu->node = of_node_get(node);
> -	list_add_tail(&ccu->links, &ccu_list);
>  
>  	/*
>  	 * Set up each defined kona clock and save the result in
> diff --git a/drivers/clk/bcm/clk-kona.h b/drivers/clk/bcm/clk-kona.h
> index 6849a64baf6d..906576ec97b6 100644
> --- a/drivers/clk/bcm/clk-kona.h
> +++ b/drivers/clk/bcm/clk-kona.h
> @@ -480,7 +480,6 @@ struct ccu_data {
>  	spinlock_t lock;	/* serialization lock */
>  	bool write_enabled;	/* write access is currently enabled */
>  	struct ccu_policy policy;
> -	struct list_head links;	/* for ccu_list */
>  	struct device_node *node;
>  	struct clk_onecell_data clk_data;
>  	const char *name;
> @@ -492,7 +491,6 @@ struct ccu_data {
>  #define KONA_CCU_COMMON(_prefix, _name, _ccuname)			    \
>  	.name		= #_name "_ccu",				    \
>  	.lock		= __SPIN_LOCK_UNLOCKED(_name ## _ccu_data.lock),    \
> -	.links		= LIST_HEAD_INIT(_name ## _ccu_data.links),	    \
>  	.clk_data	= {						    \
>  		.clk_num = _prefix ## _ ## _ccuname ## _CCU_CLOCK_COUNT,    \
>  	}
> 

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