linux-kernel - Re: [PATCH] powerpc: 512x: Fix mpc5121_clk

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Date:	Mon, 09 Apr 2012 15:06:21 +0200
From:	Richard Weinberger <richard@....at>
To:	Richard Weinberger <richard@....at>
CC:	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	paulus@...ba.org, benh@...nel.crashing.org, agust@...x.de
Subject: Re: [PATCH] powerpc: 512x: Fix mpc5121_clk_get()

Am 26.03.2012 21:01, schrieb Richard Weinberger:
> If try_module_get() fails, mpc5121_clk_get() might return
> a wrong clock.
> 
> Signed-off-by: Richard Weinberger <richard@....at>
> ---
>  arch/powerpc/platforms/512x/clock.c |    6 ++++--
>  1 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/powerpc/platforms/512x/clock.c b/arch/powerpc/platforms/512x/clock.c
> index 1d8700f..9f771e0 100644
> --- a/arch/powerpc/platforms/512x/clock.c
> +++ b/arch/powerpc/platforms/512x/clock.c
> @@ -54,14 +54,16 @@ static DEFINE_MUTEX(clocks_mutex);
>  static struct clk *mpc5121_clk_get(struct device *dev, const char *id)
>  {
>  	struct clk *p, *clk = ERR_PTR(-ENOENT);
> -	int dev_match = 0;
> -	int id_match = 0;
> +	int dev_match;
> +	int id_match;
>  
>  	if (dev == NULL || id == NULL)
>  		return clk;
>  
>  	mutex_lock(&clocks_mutex);
>  	list_for_each_entry(p, &clocks, node) {
> +		dev_match = id_match = 0;
> +
>  		if (dev == p->dev)
>  			dev_match++;
>  		if (strcmp(id, p->name) == 0)

*ping*

Thanks,
//richard


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