linux-kernel - [PATCH 2/7] Revert "ACPI / OSI: Add OEM _OSI string to enable NVidia HDMI audio"

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Message-Id: <20190814213118.28473-3-kherbst@redhat.com>
Date:   Wed, 14 Aug 2019 23:31:13 +0200
From:   Karol Herbst <kherbst@...hat.com>
To:     linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org
Cc:     Karol Herbst <kherbst@...hat.com>,
        Alex Hung <alex.hung@...onical.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Dave Airlie <airlied@...hat.com>,
        Lyude Paul <lyude@...hat.com>, Ben Skeggs <bskeggs@...hat.com>
Subject: [PATCH 2/7] Revert "ACPI / OSI: Add OEM _OSI string to enable NVidia HDMI audio"

This reverts commit 887532ca7ca59fcf0547a79211756791128030a3.

We have a better solution for this: b516ea586d717

And same as with the last commit: "NVidia Linux driver" that's Nouveau, any
out of tree driver does _not_ matter. And with Nouveau all of this works even
though it required a proper fix first, but we have that now.

Signed-off-by: Karol Herbst <kherbst@...hat.com>
CC: Alex Hung <alex.hung@...onical.com>
CC: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
CC: Dave Airlie <airlied@...hat.com>
CC: Lyude Paul <lyude@...hat.com>
CC: Ben Skeggs <bskeggs@...hat.com>
---
 drivers/acpi/osi.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/acpi/osi.c b/drivers/acpi/osi.c
index 9b20ac4d79a0..56cc95b6b724 100644
--- a/drivers/acpi/osi.c
+++ b/drivers/acpi/osi.c
@@ -53,14 +53,6 @@ osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = {
 	 * be removed if both new and old graphics cards are supported.
 	 */
 	{"Linux-Dell-Video", true},
-	/*
-	 * Linux-Lenovo-NV-HDMI-Audio is used by BIOS to power on NVidia's HDMI
-	 * audio device which is turned off for power-saving in Windows OS.
-	 * This power management feature observed on some Lenovo Thinkpad
-	 * systems which will not be able to output audio via HDMI without
-	 * a BIOS workaround.
-	 */
-	{"Linux-Lenovo-NV-HDMI-Audio", true},
 };
 
 static u32 acpi_osi_handler(acpi_string interface, u32 supported)
-- 
2.21.0