From mboxrd@z Thu Jan  1 00:00:00 1970
From: xiaolei li <xiaolei.li@mediatek.com>
Date: Tue, 04 Jul 2017 01:20:47 +0000
Subject: Re: [PATCH] mtd: nand: mtk: release lock on error path
Message-Id: <1499131247.21448.2.camel@mhfsdcap03>
List-Id: <kernel-janitors.vger.kernel.org>
References: <20170703104858.2226i5bmcvnhhy2x@mwanda>
In-Reply-To: <20170703104858.2226i5bmcvnhhy2x@mwanda>
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To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>, Richard Weinberger <richard@nod.at>, David Woodhouse <dwmw2@infradead.org>, Brian Norris <computersforpeace@gmail.com>, Marek Vasut <marek.vasut@gmail.com>, Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>, Matthias Brugger <matthias.bgg@gmail.com>, linux-mtd@lists.infradead.org, linux-mediatek@lists.infradead.org, kernel-janitors@vger.kernel.org

On Mon, 2017-07-03 at 13:54 +0300, Dan Carpenter wrote:
> We only want to hold the lock on the success path, not this error path.
> 
> Fixes: 7ec4a37c5d71 ("mtd: nand: mediatek: add support for different MTK NAND FLASH Controller IP")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> 
> diff --git a/drivers/mtd/nand/mtk_ecc.c b/drivers/mtd/nand/mtk_ecc.c
> index f38e2bb1953e..6c3a4aab0b48 100644
> --- a/drivers/mtd/nand/mtk_ecc.c
> +++ b/drivers/mtd/nand/mtk_ecc.c
> @@ -273,8 +273,10 @@ int mtk_ecc_enable(struct mtk_ecc *ecc, struct mtk_ecc_config *config)
>  	mtk_ecc_wait_idle(ecc, op);
>  
>  	ret = mtk_ecc_config(ecc, config);
> -	if (ret)
> +	if (ret) {
> +		mutex_unlock(&ecc->lock);
>  		return ret;
> +	}
>  
>  	if (config->mode != ECC_NFI_MODE || op != ECC_ENCODE) {
>  		init_completion(&ecc->done);

Reviewed-by: Xiaolei Li <xiaolei.li@mediatek.com>

Thanks a lot!
Xiaolei