linux-kernel - Re: [PATCH] mtd: ubi: fix unreleased fwnode_handle in find_volume

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Message-ID: <f475a196-db30-7aef-6bc7-3c7d0e962382@huawei.com>
Date: Mon, 21 Oct 2024 10:29:51 +0800
From: Zhihao Cheng <chengzhihao1@...wei.com>
To: Javier Carrasco <javier.carrasco.cruz@...il.com>, Richard Weinberger
	<richard@....at>, Miquel Raynal <miquel.raynal@...tlin.com>, Vignesh
 Raghavendra <vigneshr@...com>, Daniel Golle <daniel@...rotopia.org>
CC: <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mtd: ubi: fix unreleased fwnode_handle in
 find_volume_fwnode()

在 2024/10/20 4:27, Javier Carrasco 写道:
> The 'fw_vols' fwnode_handle initialized via
> device_get_named_child_node() requires explicit calls to
> fwnode_handle_put() when the variable is no longer required.
> 
> Add the missing calls to fwnode_handle_put() before the function
> returns.
> 
> Fixes: 51932f9fc487 ("mtd: ubi: populate ubi volume fwnode")
> Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>
> ---
>   drivers/mtd/ubi/vmt.c | 2 ++
>   1 file changed, 2 insertions(+)

Reviewed-by: Zhihao Cheng <chengzhihao1@...wei.com>
> 
> diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
> index 5a3558bbb903..e5cf3bdca3b0 100644
> --- a/drivers/mtd/ubi/vmt.c
> +++ b/drivers/mtd/ubi/vmt.c
> @@ -143,8 +143,10 @@ static struct fwnode_handle *find_volume_fwnode(struct ubi_volume *vol)
>   		    vol->vol_id != volid)
>   			continue;
>   
> +		fwnode_handle_put(fw_vols);
>   		return fw_vol;
>   	}
> +	fwnode_handle_put(fw_vols);
>   
>   	return NULL;
>   }
> 
> ---
> base-commit: f2493655d2d3d5c6958ed996b043c821c23ae8d3
> change-id: 20241019-mtd-uvi-fwnode_handle_put-7b220d2778b5
> 
> Best regards,
>