linux-kernel - Re: [PATCH v2 4/5] lightnvm: release dev if dma pools fails

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Date:	Tue, 24 Nov 2015 12:06:29 +0100
From:	Matias Bjørling <mb@...htnvm.io>
To:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
CC:	linux-kernel@...r.kernel.org, linux-block@...r.kernel.org
Subject: Re: [PATCH v2 4/5] lightnvm: release dev if dma pools fails

On 11/24/2015 11:34 AM, Sudip Mukherjee wrote:
> If create_dma_pools() fails then we just returned the error code but we
> missed freeing the device.
>
> Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
> ---
>   drivers/lightnvm/core.c | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
> index d288996..9dd1623 100644
> --- a/drivers/lightnvm/core.c
> +++ b/drivers/lightnvm/core.c
> @@ -318,6 +318,7 @@ int nvm_register(struct request_queue *q, char *disk_name,
>   								"ppalist");
>   		if (!dev->ppalist_pool) {
>   			pr_err("nvm: could not create ppa pool\n");
> +			nvm_free(dev);
>   			return -ENOMEM;
>   		}
>   	}
>
Thanks Sudip. The nvm_free frees the registered manager. However, it 
should not be cleaned up if it failed. As nothing else is allocated 
after the registration.
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