linux-kernel - Re: [PATCH 1/2] firmware: stratix10-svc: add missing gen_pool_destroy() in stratix10_svc_drv

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Message-ID: <83accdc8-2a6f-fa7c-ed82-a7cafc3eda39@kernel.org>
Date:   Mon, 7 Nov 2022 13:56:39 -0600
From:   Dinh Nguyen <dinguyen@...nel.org>
To:     Yang Yingliang <yangyingliang@...wei.com>,
        linux-kernel@...r.kernel.org, richard.gong@...el.com,
        atull@...nel.org, tien.sung.ang@...el.com
Subject: Re: [PATCH 1/2] firmware: stratix10-svc: add missing
 gen_pool_destroy() in stratix10_svc_drv_probe()



On 11/3/22 02:09, Yang Yingliang wrote:
> In error path in stratix10_svc_drv_probe(), gen_pool_destroy() should be called
> to destroy the memory pool that created by svc_create_memory_pool().
> 
> Fixes: 7ca5ce896524 ("firmware: add Intel Stratix10 service layer driver")
> Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
> ---
>   drivers/firmware/stratix10-svc.c | 16 +++++++++++-----
>   1 file changed, 11 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
> index b4081f4d88a3..1a5640b3ab42 100644
> --- a/drivers/firmware/stratix10-svc.c
> +++ b/drivers/firmware/stratix10-svc.c
> @@ -1138,13 +1138,17 @@ static int stratix10_svc_drv_probe(struct platform_device *pdev)
>   
>   	/* allocate service controller and supporting channel */
>   	controller = devm_kzalloc(dev, sizeof(*controller), GFP_KERNEL);
> -	if (!controller)
> -		return -ENOMEM;
> +	if (!controller) {
> +		ret = -ENOMEM;
> +		goto err_destroy_pool;
> +	}
>   
>   	chans = devm_kmalloc_array(dev, SVC_NUM_CHANNEL,
>   				   sizeof(*chans), GFP_KERNEL | __GFP_ZERO);
> -	if (!chans)
> -		return -ENOMEM;
> +	if (!chans) {
> +		ret = -ENOMEM;
> +		goto err_destroy_pool;
> +	}
>   
>   	controller->dev = dev;
>   	controller->num_chans = SVC_NUM_CHANNEL;
> @@ -1159,7 +1163,7 @@ static int stratix10_svc_drv_probe(struct platform_device *pdev)
>   	ret = kfifo_alloc(&controller->svc_fifo, fifo_size, GFP_KERNEL);
>   	if (ret) {
>   		dev_err(dev, "failed to allocate FIFO\n");
> -		return ret;
> +		goto err_destroy_pool;
>   	}
>   	spin_lock_init(&controller->svc_fifo_lock);
>   
> @@ -1221,6 +1225,8 @@ static int stratix10_svc_drv_probe(struct platform_device *pdev)
>   
>   err_free_kfifo:
>   	kfifo_free(&controller->svc_fifo);
> +err_destroy_pool:
> +	gen_pool_destroy(genpool);
>   	return ret;
>   }
>   

Acked-by: Dinh Nguyen <dinguyen@...nel.org>