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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Sat, 26 May 2012 13:29:46 +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 03/15] hw_random: mxc-rnga: Use
 clk_prepare_enable/clk_disable_unprepare

On Fri, May 25, 2012 at 08:14:44PM -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>
> ---
>  drivers/char/hw_random/mxc-rnga.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/char/hw_random/mxc-rnga.c b/drivers/char/hw_random/mxc-rnga.c
> index 187c6be..6f20f56 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);

You forgot the clk_disable_unprepare in the remove path.

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/