linux-kernel - Re: clk: stm32mp1: Fix a memory leak in 'clk_stm32_register_gate

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Date:   Mon, 14 May 2018 08:50:48 +0000
From:   Gabriel FERNANDEZ <gabriel.fernandez@...com>
To:     Christophe Jaillet <christophe.jaillet@...adoo.fr>,
        "mturquette@...libre.com" <mturquette@...libre.com>,
        "sboyd@...nel.org" <sboyd@...nel.org>,
        "mcoquelin.stm32@...il.com" <mcoquelin.stm32@...il.com>,
        Alexandre TORGUE <alexandre.torgue@...com>
CC:     "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: Re: clk: stm32mp1: Fix a memory leak in
 'clk_stm32_register_gate_ops()'

Hi Christophe,

Many thanks !

Acked-by: Gabriel Fernandez <gabriel.fernandez@...com>


On 05/13/2018 01:17 PM, Christophe Jaillet wrote:
> We allocate some memory which is neither used, nor referenced by anything.
> So axe it.
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
> This patch as not been compile-tested, I don't have the corresponding arch
> and have not taken time to cross-compile it.
> ---
>   drivers/clk/clk-stm32mp1.c | 9 +--------
>   1 file changed, 1 insertion(+), 8 deletions(-)
>
> diff --git a/drivers/clk/clk-stm32mp1.c b/drivers/clk/clk-stm32mp1.c
> index edd3cf451401..dfb9cb5bd0c4 100644
> --- a/drivers/clk/clk-stm32mp1.c
> +++ b/drivers/clk/clk-stm32mp1.c
> @@ -579,14 +579,9 @@ clk_stm32_register_gate_ops(struct device *dev,
>   			    spinlock_t *lock)
>   {
>   	struct clk_init_data init = { NULL };
> -	struct clk_gate *gate;
>   	struct clk_hw *hw;
>   	int ret;
>   
> -	gate = kzalloc(sizeof(*gate), GFP_KERNEL);
> -	if (!gate)
> -		return ERR_PTR(-ENOMEM);
> -
>   	init.name = name;
>   	init.parent_names = &parent_name;
>   	init.num_parents = 1;
> @@ -604,10 +599,8 @@ clk_stm32_register_gate_ops(struct device *dev,
>   	hw->init = &init;
>   
>   	ret = clk_hw_register(dev, hw);
> -	if (ret) {
> -		kfree(gate);
> +	if (ret)
>   		hw = ERR_PTR(ret);
> -	}
>   
>   	return hw;
>   }