linux-kernel - Re: [PATCH 2/3] platform/x86: ideapad-laptop: add fn_lock

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <94ba758b-b1c3-425e-a9ed-78e364fdb6f0@redhat.com>
Date: Mon, 8 Apr 2024 17:49:25 +0200
From: Hans de Goede <hdegoede@...hat.com>
To: Gergo Koteles <soyer@....hu>, Ike Panhc <ike.pan@...onical.com>,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
 Pavel Machek <pavel@....cz>, Lee Jones <lee@...nel.org>,
 Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-leds@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 2/3] platform/x86: ideapad-laptop: add fn_lock_get/set
 functions

Hi,

On 4/2/24 3:21 PM, Gergo Koteles wrote:
> The FnLock is retrieved and set in several places in the code.
> 
> Move details into ideapad_fn_lock_get and ideapad_fn_lock_set functions.
> 
> Signed-off-by: Gergo Koteles <soyer@....hu>

> ---
>  drivers/platform/x86/ideapad-laptop.c | 38 +++++++++++++++++++--------
>  1 file changed, 27 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
> index 901849810ce2..529df08af548 100644
> --- a/drivers/platform/x86/ideapad-laptop.c
> +++ b/drivers/platform/x86/ideapad-laptop.c
> @@ -513,11 +513,8 @@ static ssize_t fan_mode_store(struct device *dev,
>  
>  static DEVICE_ATTR_RW(fan_mode);
>  
> -static ssize_t fn_lock_show(struct device *dev,
> -			    struct device_attribute *attr,
> -			    char *buf)
> +static int ideapad_fn_lock_get(struct ideapad_private *priv)
>  {
> -	struct ideapad_private *priv = dev_get_drvdata(dev);
>  	unsigned long hals;
>  	int err;
>  
> @@ -525,7 +522,27 @@ static ssize_t fn_lock_show(struct device *dev,
>  	if (err)
>  		return err;
>  
> -	return sysfs_emit(buf, "%d\n", !!test_bit(HALS_FNLOCK_STATE_BIT, &hals));
> +	return !!test_bit(HALS_FNLOCK_STATE_BIT, &hals);
> +}
> +
> +static int ideapad_fn_lock_set(struct ideapad_private *priv, bool state)
> +{
> +	return exec_sals(priv->adev->handle,
> +		state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF);
> +}
> +
> +static ssize_t fn_lock_show(struct device *dev,
> +			    struct device_attribute *attr,
> +			    char *buf)
> +{
> +	struct ideapad_private *priv = dev_get_drvdata(dev);
> +	int brightness;
> +
> +	brightness = ideapad_fn_lock_get(priv);
> +	if (brightness < 0)
> +		return brightness;
> +
> +	return sysfs_emit(buf, "%d\n", brightness);
>  }
>  
>  static ssize_t fn_lock_store(struct device *dev,
> @@ -540,7 +557,7 @@ static ssize_t fn_lock_store(struct device *dev,
>  	if (err)
>  		return err;
>  
> -	err = exec_sals(priv->adev->handle, state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF);
> +	err = ideapad_fn_lock_set(priv, state);
>  	if (err)
>  		return err;
>  
> @@ -1709,7 +1726,6 @@ static void ideapad_wmi_notify(struct wmi_device *wdev, union acpi_object *data)
>  {
>  	struct ideapad_wmi_private *wpriv = dev_get_drvdata(&wdev->dev);
>  	struct ideapad_private *priv;
> -	unsigned long result;
>  
>  	mutex_lock(&ideapad_shared_mutex);
>  
> @@ -1722,11 +1738,11 @@ static void ideapad_wmi_notify(struct wmi_device *wdev, union acpi_object *data)
>  		ideapad_input_report(priv, 128);
>  		break;
>  	case IDEAPAD_WMI_EVENT_FN_KEYS:
> -		if (priv->features.set_fn_lock_led &&
> -		    !eval_hals(priv->adev->handle, &result)) {
> -			bool state = test_bit(HALS_FNLOCK_STATE_BIT, &result);
> +		if (priv->features.set_fn_lock_led) {
> +			int brightness = ideapad_fn_lock_get(priv);
>  
> -			exec_sals(priv->adev->handle, state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF);
> +			if (brightness >= 0)
> +				ideapad_fn_lock_set(priv, brightness);
>  		}
>  
>  		if (data->type != ACPI_TYPE_INTEGER) {