linux-kernel - Re: [RFC PATCH 39/57] drivers: mux: Use class_find_device_by_of

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Date:   Mon, 3 Jun 2019 16:22:11 +0000
From:   Peter Rosin <peda@...ntia.se>
To:     Suzuki K Poulose <suzuki.poulose@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "rafael@...nel.org" <rafael@...nel.org>
Subject: Re: [RFC PATCH 39/57] drivers: mux: Use class_find_device_by_of_node
 helper

Hi!

This all sounds like nice changes. First a couple of nitpicks:

From the cover letter, included here to spare most of the others...

> subsystems. This series is an attempt to consolidate the and cleanup

s/the and/and/

On 2019-06-03 17:50, Suzuki K Poulose wrote:
> Use the generic helper to find a device matching the of_node.
> 
> Cc: Peter Rosin <peda@...ntia.se>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
> ---
>  drivers/mux/core.c | 8 +-------
>  1 file changed, 1 insertion(+), 7 deletions(-)
> 
> diff --git a/drivers/mux/core.c b/drivers/mux/core.c
> index d1271c1..3591e40 100644
> --- a/drivers/mux/core.c
> +++ b/drivers/mux/core.c
> @@ -405,18 +405,12 @@ int mux_control_deselect(struct mux_control *mux)
>  }
>  EXPORT_SYMBOL_GPL(mux_control_deselect);
>  
> -static int of_dev_node_match(struct device *dev, const void *data)
> -{
> -	return dev->of_node == data;
> -}
> -
>  /* Note this function returns a reference to the mux_chip dev. */
>  static struct mux_chip *of_find_mux_chip_by_node(struct device_node *np)
>  {
>  	struct device *dev;
>  
> -	dev = class_find_device(&mux_class, NULL, np, of_dev_node_match);
> -

Nitpick #2. Please leave the blank line where it belongs.

However, how can I review this if I do not get to see the patch that
adds the class_find_device_by_of_node function? Please provide a
little bit more context!

Cheers,
Peter

> +	dev = class_find_device_by_of_node(&mux_class, NULL, np);
>  	return dev ? to_mux_chip(dev) : NULL;
>  }
>  
>