linux-kernel - Re: [RFC PATCH] platform/x86: asus-wmi: Simplify the keyboard brightness updating process

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Date:   Mon, 10 Sep 2018 16:56:55 +0800
From:   Jian-Hong Pan <jian-hong@...lessm.com>
To:     Corentin Chary <corentin.chary@...il.com>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        acpi4asus-user@...ts.sourceforge.net,
        platform-driver-x86@...r.kernel.org,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        Linux Upstreaming Team <linux@...lessm.com>
Cc:     Jian-Hong Pan <jian-hong@...lessm.com>
Subject: Re: [RFC PATCH] platform/x86: asus-wmi: Simplify the keyboard
 brightness updating process

2018-08-16 16:41 GMT+08:00 Jian-Hong Pan <jian-hong@...lessm.com>:
> The original asus-wmi queues a work which calls the ACPI/WMI methods to
> update the keyboard LED brightness.  Similar drivers - acer-wmi,
> dell-wmi-led just call the ACPI/WMI methods directly without workqueues.
>
> This patch simplifies the keyboard brightness updating process which
> calls the kbd_led_update function directly without workqueue in
> asus-wmi.
>
> Signed-off-by: Jian-Hong Pan <jian-hong@...lessm.com>
> ---
>  drivers/platform/x86/asus-wmi.c | 14 ++++----------
>  1 file changed, 4 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
> index 34dcc1aac4ea..d3d500851a7a 100644
> --- a/drivers/platform/x86/asus-wmi.c
> +++ b/drivers/platform/x86/asus-wmi.c
> @@ -239,7 +239,6 @@ struct asus_wmi {
>         int lightbar_led_wk;
>         struct workqueue_struct *led_workqueue;
>         struct work_struct tpd_led_work;
> -       struct work_struct kbd_led_work;
>         struct work_struct wlan_led_work;
>         struct work_struct lightbar_led_work;
>
> @@ -456,12 +455,9 @@ static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
>         return read_tpd_led_state(asus);
>  }
>
> -static void kbd_led_update(struct work_struct *work)
> +static void kbd_led_update(struct asus_wmi *asus)
>  {
>         int ctrl_param = 0;
> -       struct asus_wmi *asus;
> -
> -       asus = container_of(work, struct asus_wmi, kbd_led_work);
>
>         /*
>          * bits 0-2: level
> @@ -516,7 +512,7 @@ static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
>                 value = 0;
>
>         asus->kbd_led_wk = value;
> -       queue_work(asus->led_workqueue, &asus->kbd_led_work);
> +       kbd_led_update(asus);
>  }
>
>  static void kbd_led_set(struct led_classdev *led_cdev,
> @@ -671,8 +667,6 @@ static int asus_wmi_led_init(struct asus_wmi *asus)
>
>         led_val = kbd_led_read(asus, NULL, NULL);
>         if (led_val >= 0) {
> -               INIT_WORK(&asus->kbd_led_work, kbd_led_update);
> -
>                 asus->kbd_led_wk = led_val;
>                 asus->kbd_led.name = "asus::kbd_backlight";
>                 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
> @@ -2314,7 +2308,7 @@ static int asus_hotk_resume(struct device *device)
>         struct asus_wmi *asus = dev_get_drvdata(device);
>
>         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
> -               queue_work(asus->led_workqueue, &asus->kbd_led_work);
> +               kbd_led_update(asus);
>
>         return 0;
>  }
> @@ -2350,7 +2344,7 @@ static int asus_hotk_restore(struct device *device)
>                 rfkill_set_sw_state(asus->uwb.rfkill, bl);
>         }
>         if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
> -               queue_work(asus->led_workqueue, &asus->kbd_led_work);
> +               kbd_led_update(asus);
>
>         return 0;
>  }
> --
> 2.11.0
>

Just gentle ping.  Any comment for this patch?

Regards,
Jian-Hong Pan