linux-kernel - Re: [PATCH v2] clk: keystone: gate: fix clk_init

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Date:	Fri, 31 Jan 2014 09:46:03 -0500
From:	Santosh Shilimkar <santosh.shilimkar@...com>
To:	Ivan Khoronzhuk <ivan.khoronzhuk@...com>
CC:	<mturquette@...aro.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] clk: keystone: gate: fix clk_init_data initialization

On Thursday 30 January 2014 01:03 PM, Ivan Khoronzhuk wrote:
> The clk_init_data struct is allocated in the stack. All members of
> this struct should be initialized before using otherwise it will
> lead to unpredictable situation as it can contain garbage.
> 
> Ultimately the clk->flag field contains garbage. In my case it leads
> that flag CLK_IGNORE_UNUSED is set for most of clocks. As result a
> bunch of unused clocks cannot be disabled.
> 
> So initialize flags in this structure too.
> 
> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@...com>
> ---
> Based on
> git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone.git
> keystone/master
> 
> v1..v2:
> - updated commit description only
> 
Thanks for the update. 

>  drivers/clk/keystone/gate.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/clk/keystone/gate.c b/drivers/clk/keystone/gate.c
> index 17a5983..86f1e36 100644
> --- a/drivers/clk/keystone/gate.c
> +++ b/drivers/clk/keystone/gate.c
> @@ -179,6 +179,7 @@ static struct clk *clk_register_psc(struct device *dev,
>  
>  	init.name = name;
>  	init.ops = &clk_psc_ops;
> +	init.flags = 0;
>  	init.parent_names = (parent_name ? &parent_name : NULL);
>  	init.num_parents = (parent_name ? 1 : 0);
>  
> 

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