linux-kernel - Re: [PATCH v4 1/2] platform/x86: dell-privacy: Add support for Dell hardware privacy

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Date:   Sun, 21 Mar 2021 23:32:45 +0800
From:   Perry Yuan <perry979106@...il.com>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        "Yuan, Perry" <Perry.Yuan@...l.com>,
        "pobrn@...tonmail.com" <pobrn@...tonmail.com>,
        "oder_chiou@...ltek.com" <oder_chiou@...ltek.com>,
        "perex@...ex.cz" <perex@...ex.cz>,
        "tiwai@...e.com" <tiwai@...e.com>,
        "hdegoede@...hat.com" <hdegoede@...hat.com>,
        "mgross@...ux.intel.com" <mgross@...ux.intel.com>,
        "Limonciello, Mario" <Mario.Limonciello@...l.com>
Cc:     "platform-driver-x86@...r.kernel.org" 
        <platform-driver-x86@...r.kernel.org>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 1/2] platform/x86: dell-privacy: Add support for Dell
 hardware privacy

Hi Pierre:
Thanks for your review!
On 2021/3/8 23:59, Pierre-Louis Bossart wrote:
> 
> 
> 
>>>>    module_param(force_rfkill, bool, 0444);
>>>>    MODULE_PARM_DESC(force_rfkill, "enable rfkill on non whitelisted
>>>> models");
>>>>
>>>> +
>>>
>>> spurious line change
>> I just want to make them separate with more space .
>> If it cause concern, I will remote the line in V5.
> 
> it's fine to improve spaces/alignment, just do it in a separate patch.
> 
>>
>>>
>>>>    static const struct dmi_system_id dell_device_table[] __initconst 
>>>> = {
>>>>        {
>>>>            .ident = "Dell laptop",
>>>> @@ -2205,11 +2209,17 @@ static int __init dell_init(void)
>>>>        dell_laptop_register_notifier(&dell_laptop_notifier);
>>>>
>>>>        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;
>>>> +
>>>     dell_smbios_find_token(GLOBAL_MIC_MUTE_ENABLE)) {
>>>
>>> not sure why you changed the alignment?
>> The previous alignment is a little not correct.
>> So I adjust it
>> If it cause concern, will restore it to original shape.
> 
> same here, use a different patch.
> 
As you suggested,I should add the alignment change in another patch.
But if i keep the old alignment, the code will be very odd.
Seems like that I have to change the below code to new alignment in this 
patch.

if (dell_smbios_find_token(GLOBAL_MIC_MUTE_DISABLE) &&
     dell_smbios_find_token(GLOBAL_MIC_MUTE_ENABLE)) { <<--- changed back
	if (!privacy_valid)
	    	has_privacy = true;
	else
	    	has_privacy = false;
	if (!has_privacy) {
		micmute_led_cdev.brightness <<----------- new alignment
		...
	}
...
}