Re: [PATCH v7 1/2] platform/x86: dell-privacy: Add support for Dell hardware privacy

[Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx>]

On 4/12/2021 11:19 AM, Perry Yuan wrote:
> From: Perry Yuan <perry_yuan@xxxxxxxx>

(...)

> diff --git a/drivers/platform/x86/dell/dell-laptop.c b/drivers/platform/x86/dell/dell-laptop.c
> index 70edc5bb3a14..e7ffc0b81208 100644
> --- a/drivers/platform/x86/dell/dell-laptop.c
> +++ b/drivers/platform/x86/dell/dell-laptop.c
> @@ -31,6 +31,8 @@
>   #include "dell-rbtn.h"
>   #include "dell-smbios.h"
>   
> +#include "dell-privacy-wmi.h"
> +
>   struct quirk_entry {
>   	bool touchpad_led;
>   	bool kbd_led_not_present;
> @@ -90,6 +92,7 @@ static struct rfkill *wifi_rfkill;
>   static struct rfkill *bluetooth_rfkill;
>   static struct rfkill *wwan_rfkill;
>   static bool force_rfkill;
> +static bool has_privacy;
>   
>   module_param(force_rfkill, bool, 0444);
>   MODULE_PARM_DESC(force_rfkill, "enable rfkill on non whitelisted models");
> @@ -2206,10 +2209,16 @@ static int __init dell_init(void)
>   
>   	if (dell_smbios_find_token(GLOBAL_MIC_MUTE_DISABLE) &&
>   	    dell_smbios_find_token(GLOBAL_MIC_MUTE_ENABLE)) {
> -		micmute_led_cdev.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE);
> -		ret = led_classdev_register(&platform_device->dev, &micmute_led_cdev);
> -		if (ret < 0)
> -			goto fail_led;
> +		if (dell_privacy_present())
> +			has_privacy = true;
> +		else
> +			has_privacy = false;

Bit, of nitpicking, but you can write above shorter:
has_privacy = dell_privacy_present();