linux-kernel - Re: [PATCH v4 2/2] leds: tlc591xx: use devm_led_classdev_register

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Date:   Fri, 20 Sep 2019 22:29:30 +0200
From:   Jacek Anaszewski <jacek.anaszewski@...il.com>
To:     Jean-Jacques Hiblot <jjhiblot@...com>, pavel@....cz, dmurphy@...com
Cc:     tomi.valkeinen@...com, linux-leds@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 2/2] leds: tlc591xx: use
 devm_led_classdev_register_ext()

Hi Jean,

Thank you for the update.

On 9/20/19 1:58 PM, Jean-Jacques Hiblot wrote:
> Use devm_led_classdev_register_ext() to pass the fwnode to the LED core.
> The fwnode can then be used by the firmware core to create meaningful
> names.
> 
> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@...com>
> ---
>  drivers/leds/leds-tlc591xx.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c
> index bbdaa3148317..8eadb673dc2e 100644
> --- a/drivers/leds/leds-tlc591xx.c
> +++ b/drivers/leds/leds-tlc591xx.c
> @@ -186,6 +186,9 @@ tlc591xx_probe(struct i2c_client *client,
>  
>  	for_each_child_of_node(np, child) {
>  		struct tlc591xx_led *led;
> +		struct led_init_data init_data = {};
> +
> +		init_data.fwnode = of_fwnode_handle(child);
>  
>  		err = of_property_read_u32(child, "reg", &reg);
>  		if (err) {
> @@ -200,8 +203,6 @@ tlc591xx_probe(struct i2c_client *client,
>  		led = &priv->leds[reg];
>  
>  		led->active = true;
> -		led->ldev.name =
> -			of_get_property(child, "label", NULL) ? : child->name;
>  		led->ldev.default_trigger =
>  			of_get_property(child, "linux,default-trigger", NULL);
>  
> @@ -209,7 +210,8 @@ tlc591xx_probe(struct i2c_client *client,
>  		led->led_no = reg;
>  		led->ldev.brightness_set_blocking = tlc591xx_brightness_set;
>  		led->ldev.max_brightness = LED_FULL;

I was asking for removing tabove assignment, but we can always do that
in the incremental patch.

Patch set applied to the for-5.5 branch. Thanks.

> -		err = devm_led_classdev_register(dev, &led->ldev);
> +		err = devm_led_classdev_register_ext(dev, &led->ldev,
> +						     &init_data);
>  		if (err < 0) {
>  			dev_err(dev, "couldn't register LED %s\n",
>  				led->ldev.name);
> 

-- 
Best regards,
Jacek Anaszewski