linux-kernel - Re: [PATCH 2/4] iio: adc: ad7768-1: use device

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Message-ID: <02bda6f37ac5ed171429a980b9a3ac69cd4efcf9.camel@gmail.com>
Date: Thu, 01 Aug 2024 09:31:16 +0200
From: Nuno Sá <noname.nuno@...il.com>
To: Javier Carrasco <javier.carrasco.cruz@...il.com>, Suzuki K Poulose
 <suzuki.poulose@....com>, Mike Leach <mike.leach@...aro.org>, James Clark
 <james.clark@...aro.org>, Alexander Shishkin
 <alexander.shishkin@...ux.intel.com>, Michael Hennerich
 <Michael.Hennerich@...log.com>, Lars-Peter Clausen <lars@...afoo.de>, 
 Jonathan Cameron <jic23@...nel.org>, Anand Ashok Dumbre
 <anand.ashok.dumbre@...inx.com>,  Michal Simek <michal.simek@....com>,
 Sakari Ailus <sakari.ailus@...ux.intel.com>, Pavel Machek <pavel@....cz>, 
 Lee Jones <lee@...nel.org>
Cc: coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org, 
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org, 
	linux-leds@...r.kernel.org
Subject: Re: [PATCH 2/4] iio: adc: ad7768-1: use device_* to iterate over
 device child nodes

On Thu, 2024-08-01 at 08:13 +0200, Javier Carrasco wrote:
> Drop the manual access to the fwnode of the device to iterate over its
> child nodes. `device_for_each_child_node` macro provides direct access
> to the child nodes, and given that they are only required within the
> loop, the scoped variant of the macro can be used.
> 
> Use the `device_for_each_child_node_scoped` macro to iterate over the
> direct child nodes of the device.
> 
> Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>
> ---

Reviewed-by: Nuno Sa <nuno.sa@...log.com>

>  drivers/iio/adc/ad7768-1.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c
> index 70a25949142c..721672fe84ab 100644
> --- a/drivers/iio/adc/ad7768-1.c
> +++ b/drivers/iio/adc/ad7768-1.c
> @@ -544,13 +544,10 @@ static int ad7768_set_channel_label(struct iio_dev
> *indio_dev,
>  {
>  	struct ad7768_state *st = iio_priv(indio_dev);
>  	struct device *device = indio_dev->dev.parent;
> -	struct fwnode_handle *fwnode;
> -	struct fwnode_handle *child;
>  	const char *label;
>  	int crt_ch = 0;
>  
> -	fwnode = dev_fwnode(device);
> -	fwnode_for_each_child_node(fwnode, child) {
> +	device_for_each_child_node_scoped(device, child) {
>  		if (fwnode_property_read_u32(child, "reg", &crt_ch))
>  			continue;
>  
>