linux-kernel - Re: [PATCH v2 4/4] at91/avr32/atmel_lcdfb: prepare clk before calling enable

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Date:	Tue, 25 Jun 2013 10:16:02 +0200
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	Boris BREZILLON <b.brezillon@...rkiz.com>,
	"Jean-Christophe Plagniol-Villard" <plagnioj@...osoft.com>
CC:	Ludovic Desroches <ludovic.desroches@...el.com>,
	Florian Tobias Schandinat <FlorianSchandinat@....de>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-fbdev@...r.kernel.org>
Subject: Re: [PATCH v2 4/4] at91/avr32/atmel_lcdfb: prepare clk before calling
 enable

On 25/06/2013 10:14, Boris BREZILLON :
> Replace clk_enable/disable with clk_prepare_enable/disable_unprepare to
> avoid common clk framework warnings.
>
> Signed-off-by: Boris BREZILLON <b.brezillon@...rkiz.com>

Acked-by: Nicolas Ferre <nicolas.ferre@...el.com>

Jean-Christophe, can you take this one?

Thanks, best regards,

> ---
>   drivers/video/atmel_lcdfb.c |    8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
> index 540909d..8525457 100644
> --- a/drivers/video/atmel_lcdfb.c
> +++ b/drivers/video/atmel_lcdfb.c
> @@ -893,14 +893,14 @@ static int __init atmel_lcdfb_init_fbinfo(struct atmel_lcdfb_info *sinfo)
>
>   static void atmel_lcdfb_start_clock(struct atmel_lcdfb_info *sinfo)
>   {
> -	clk_enable(sinfo->bus_clk);
> -	clk_enable(sinfo->lcdc_clk);
> +	clk_prepare_enable(sinfo->bus_clk);
> +	clk_prepare_enable(sinfo->lcdc_clk);
>   }
>
>   static void atmel_lcdfb_stop_clock(struct atmel_lcdfb_info *sinfo)
>   {
> -	clk_disable(sinfo->bus_clk);
> -	clk_disable(sinfo->lcdc_clk);
> +	clk_disable_unprepare(sinfo->bus_clk);
> +	clk_disable_unprepare(sinfo->lcdc_clk);
>   }
>
>
>


-- 
Nicolas Ferre
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