linux-kernel - Re: [PATCH v2 3/5] lightnvm: create dma pool first

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Date:	Tue, 24 Nov 2015 12:01:10 +0100
From:	Matias Bjørling <mb@...htnvm.io>
To:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/5] lightnvm: create dma pool first

On 11/24/2015 11:34 AM, Sudip Mukherjee wrote:
> If create_dma_pool() fails then we are returning the error code but we
> have already added the device to the list. Lets add the device to the
> list only if everything is successfully initialized.
>
> Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
> ---
>   drivers/lightnvm/core.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
> index 2ab561f..d288996 100644
> --- a/drivers/lightnvm/core.c
> +++ b/drivers/lightnvm/core.c
> @@ -313,10 +313,6 @@ int nvm_register(struct request_queue *q, char *disk_name,
>   	if (ret)
>   		goto err_init;
>
> -	down_write(&nvm_lock);
> -	list_add(&dev->devices, &nvm_devices);
> -	up_write(&nvm_lock);
> -
>   	if (dev->ops->max_phys_sect > 1) {
>   		dev->ppalist_pool = dev->ops->create_dma_pool(dev->q,
>   								"ppalist");
> @@ -326,6 +322,10 @@ int nvm_register(struct request_queue *q, char *disk_name,
>   		}
>   	}
>
> +	down_write(&nvm_lock);
> +	list_add(&dev->devices, &nvm_devices);
> +	up_write(&nvm_lock);
> +
>   	return 0;
>   err_init:
>   	kfree(dev);
>

Thanks. This have already been fixed.
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