linux-kernel - Re: [PATCH v3] mtd: rawnand: mxc: remove __init qualifier from mxcnd_probe

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Date:   Wed, 27 Jun 2018 23:35:12 +0200
From:   Boris Brezillon <boris.brezillon@...tlin.com>
To:     Martin Kaiser <martin@...ser.cx>
Cc:     David Woodhouse <dwmw2@...radead.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] mtd: rawnand: mxc: remove __init qualifier from
 mxcnd_probe_dt

On Wed, 27 Jun 2018 22:47:44 +0200
Martin Kaiser <martin@...ser.cx> wrote:

> Using the sysfs unbind, bind nodes, mxcnd_probe and mxcnd_probe_dt can
> potentially be called at any time. After the __init functions are cleaned,
> mxcnd_probe_dt is no longer available. Calling it anyway causes a crash.
> 
> mxcnd_probe used to be marked as __init, this was removed years ago.
> Remove the __init qualifier from from mxcnd_probe_dt as well.
> 
> Fixes: 06f255106923 ("mtd: remove use of __devinit")
> Signed-off-by: Martin Kaiser <martin@...ser.cx>

Reviewed-by: Boris Brezillon <boris.brezillon@...tlin.com>

> ---
> changes in v3
>    - show the first 12 characters of the SHA-1 ID in the Fixes: tag
> 
> changes in v2
>    - rephrased the commit message
>    - added a Fixes: tag
> 
>  drivers/mtd/nand/raw/mxc_nand.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mtd/nand/raw/mxc_nand.c b/drivers/mtd/nand/raw/mxc_nand.c
> index 26cef218bb43..90cfb5e730aa 100644
> --- a/drivers/mtd/nand/raw/mxc_nand.c
> +++ b/drivers/mtd/nand/raw/mxc_nand.c
> @@ -1686,7 +1686,7 @@ static const struct of_device_id mxcnd_dt_ids[] = {
>  };
>  MODULE_DEVICE_TABLE(of, mxcnd_dt_ids);
>  
> -static int __init mxcnd_probe_dt(struct mxc_nand_host *host)
> +static int mxcnd_probe_dt(struct mxc_nand_host *host)
>  {
>  	struct device_node *np = host->dev->of_node;
>  	const struct of_device_id *of_id =
> @@ -1700,7 +1700,7 @@ static int __init mxcnd_probe_dt(struct mxc_nand_host *host)
>  	return 0;
>  }
>  #else
> -static int __init mxcnd_probe_dt(struct mxc_nand_host *host)
> +static int mxcnd_probe_dt(struct mxc_nand_host *host)
>  {
>  	return 1;
>  }