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

[Yuan, Perry]

Hi ,
> -----Original Message-----
> From: Amadeusz Sławiński <amadeuszx.slawinski at linux.intel.com>
> Sent: 2021年4月12日 18:40
> To: Yuan, Perry; pobrn at protonmail.com; pierre-
> louis.bossart at linux.intel.com; oder_chiou at realtek.com; perex at perex.cz;
> tiwai at suse.com; hdegoede at redhat.com; mgross at linux.intel.com
> Cc: alsa-devel at alsa-project.org; linux-kernel at vger.kernel.org;
> lgirdwood at gmail.com; platform-driver-x86 at vger.kernel.org;
> broonie at kernel.org; Dell Client Kernel; mario.limonciello at outlook.com
> Subject: Re: [PATCH v7 1/2] platform/x86: dell-privacy: Add support for Dell
> hardware privacy
> 
> 
> [EXTERNAL EMAIL]
> 
> On 4/12/2021 11:19 AM, Perry Yuan wrote:
> > From: Perry Yuan <perry_yuan at dell.com>
> >
> 
> (...)
> 
> > 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();

Good point, changed the code as you suggested.
Thank you.
Perry.