linux-kernel - Re: [PATCH v2 03/15] hw_random: mxc-rnga: Use clk_prepare_enable/clk_disable

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Date:	Tue, 29 May 2012 11:17:57 +0200
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Fabio Estevam <festevam@...il.com>
Cc:	kernel@...gutronix.de, shawn.guo@...escale.com,
	Fabio Estevam <fabio.estevam@...escale.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 03/15] hw_random: mxc-rnga: Use
 clk_prepare_enable/clk_disable_unprepare

On Sat, May 26, 2012 at 01:03:52PM -0300, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@...escale.com>
> 
> Prepare the clock before enabling it.
> 
> Cc: Herbert Xu <herbert@...dor.apana.org.au>
> Cc: <linux-kernel@...r.kernel.org>
> Signed-off-by: Fabio Estevam <fabio.estevam@...escale.com>

Acked-by: Sascha Hauer <s.hauer@...gutronix.de>

> ---
> Changes since v1:
> - Add missing clk_disable_unprepare(clk) in the remove path
> 
>  drivers/char/hw_random/mxc-rnga.c |    6 +++---
>  1 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/char/hw_random/mxc-rnga.c b/drivers/char/hw_random/mxc-rnga.c
> index 187c6be..430582c 100644
> --- a/drivers/char/hw_random/mxc-rnga.c
> +++ b/drivers/char/hw_random/mxc-rnga.c
> @@ -154,7 +154,7 @@ static int __init mxc_rnga_probe(struct platform_device *pdev)
>  		goto out;
>  	}
>  
> -	clk_enable(clk);
> +	clk_prepare_enable(clk);
>  
>  	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>  	if (!res) {
> @@ -196,7 +196,7 @@ err_ioremap:
>  	release_mem_region(res->start, resource_size(res));
>  
>  err_region:
> -	clk_disable(clk);
> +	clk_disable_unprepare(clk);
>  	clk_put(clk);
>  
>  out:
> @@ -215,7 +215,7 @@ static int __exit mxc_rnga_remove(struct platform_device *pdev)
>  
>  	release_mem_region(res->start, resource_size(res));
>  
> -	clk_disable(clk);
> +	clk_disable_unprepare(clk);
>  	clk_put(clk);
>  
>  	return 0;
> -- 
> 1.7.1
> 
> 

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