linux-kernel - Re: [PATCH/RFC 09/51] leds: adp5520: Remove work queue

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Date:	Fri, 17 Jul 2015 10:52:29 +0200
From:	Michael Hennerich <michael.hennerich@...log.com>
To:	Jacek Anaszewski <j.anaszewski@...sung.com>,
	<linux-leds@...r.kernel.org>
CC:	<linux-kernel@...r.kernel.org>, <cooloney@...il.com>,
	<rpurdie@...ys.net>, <stsp@...rs.sourceforge.net>,
	Andrew Lunn <andrew@...n.ch>
Subject: Re: [PATCH/RFC 09/51] leds: adp5520: Remove work queue

On 07/17/2015 10:46 AM, Jacek Anaszewski wrote:
> From: Andrew Lunn <andrew@...n.ch>
>
> Now the core implements the work queue, remove it from the driver.
>
> Signed-off-by: Andrew Lunn <andrew@...n.ch>

Acked-by: Michael Hennerich <michael.hennerich@...log.com>

> Cc: Michael Hennerich <michael.hennerich@...log.com>
> ---
>   drivers/leds/leds-adp5520.c |   22 +++-------------------
>   1 file changed, 3 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/leds/leds-adp5520.c b/drivers/leds/leds-adp5520.c
> index 07e66ca..6378150 100644
> --- a/drivers/leds/leds-adp5520.c
> +++ b/drivers/leds/leds-adp5520.c
> @@ -17,34 +17,24 @@
>   #include <linux/kernel.h>
>   #include <linux/platform_device.h>
>   #include <linux/leds.h>
> -#include <linux/workqueue.h>
>   #include <linux/mfd/adp5520.h>
>   #include <linux/slab.h>
>   
>   struct adp5520_led {
>   	struct led_classdev	cdev;
> -	struct work_struct	work;
>   	struct device		*master;
> -	enum led_brightness	new_brightness;
>   	int			id;
>   	int			flags;
>   };
>   
> -static void adp5520_led_work(struct work_struct *work)
> -{
> -	struct adp5520_led *led = container_of(work, struct adp5520_led, work);
> -	adp5520_write(led->master, ADP5520_LED1_CURRENT + led->id - 1,
> -			 led->new_brightness >> 2);
> -}
> -
>   static void adp5520_led_set(struct led_classdev *led_cdev,
>   			   enum led_brightness value)
>   {
>   	struct adp5520_led *led;
>   
>   	led = container_of(led_cdev, struct adp5520_led, cdev);
> -	led->new_brightness = value;
> -	schedule_work(&led->work);
> +	adp5520_write(led->master, ADP5520_LED1_CURRENT + led->id - 1,
> +			 value >> 2);
>   }
>   
>   static int adp5520_led_setup(struct adp5520_led *led)
> @@ -146,9 +136,6 @@ static int adp5520_led_probe(struct platform_device *pdev)
>   		led_dat->id = led_dat->flags & ADP5520_FLAG_LED_MASK;
>   
>   		led_dat->master = pdev->dev.parent;
> -		led_dat->new_brightness = LED_OFF;
> -
> -		INIT_WORK(&led_dat->work, adp5520_led_work);
>   
>   		ret = led_classdev_register(led_dat->master, &led_dat->cdev);
>   		if (ret) {
> @@ -170,10 +157,8 @@ static int adp5520_led_probe(struct platform_device *pdev)
>   
>   err:
>   	if (i > 0) {
> -		for (i = i - 1; i >= 0; i--) {
> +		for (i = i - 1; i >= 0; i--)
>   			led_classdev_unregister(&led[i].cdev);
> -			cancel_work_sync(&led[i].work);
> -		}
>   	}
>   
>   	return ret;
> @@ -192,7 +177,6 @@ static int adp5520_led_remove(struct platform_device *pdev)
>   
>   	for (i = 0; i < pdata->num_leds; i++) {
>   		led_classdev_unregister(&led[i].cdev);
> -		cancel_work_sync(&led[i].work);
>   	}
>   
>   	return 0;


-- 
Greetings,
Michael

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