Re: [alsa-devel] [PATCH 0/2] add sysfs for acpi interfaces of thinkpad hardware mute

On Wed, 2013-08-14 at 11:27 +0200, David Henningsson wrote:

The privacy issue is interesting, but I don't see a practical way of implementing things that would protect us against compromised userspaces.

That's pretty easy - just tie the LED control to the HDA device in-kernel.