linux-kernel - [RFC 1/2] ACPI: OSI: Remove Linux-Dell-Video

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Date:   Fri, 19 Aug 2022 09:25:18 -0500
From:   Mario Limonciello <mario.limonciello@....com>
To:     <linux-kernel@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
        <rafael@...nel.org>, Len Brown <lenb@...nel.org>
CC:     <kherbst@...hat.com>, <nouveau@...ts.freedesktop.org>,
        <hdegoede@...hat.com>, <ddadap@...dia.com>,
        <kai.heng.feng@...onical.com>, <Dell.Client.Kernel@...l.com>,
        Mario Limonciello <mario.limonciello@....com>
Subject: [RFC 1/2] ACPI: OSI: Remove Linux-Dell-Video _OSI string

This string was introduced because drivers for NVIDIA hardware
didn't support RTD3 in the past.  This is no longer the case, and
so vendors shouldn't be using this string to modify ASL anymore.

Signed-off-by: Mario Limonciello <mario.limonciello@....com>
---
 drivers/acpi/osi.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/drivers/acpi/osi.c b/drivers/acpi/osi.c
index 9f6853809138..c2f6b2f553d9 100644
--- a/drivers/acpi/osi.c
+++ b/drivers/acpi/osi.c
@@ -44,15 +44,6 @@ osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = {
 	{"Processor Device", true},
 	{"3.0 _SCP Extensions", true},
 	{"Processor Aggregator Device", true},
-	/*
-	 * Linux-Dell-Video is used by BIOS to disable RTD3 for NVidia graphics
-	 * cards as RTD3 is not supported by drivers now.  Systems with NVidia
-	 * cards will hang without RTD3 disabled.
-	 *
-	 * Once NVidia drivers officially support RTD3, this _OSI strings can
-	 * 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.
-- 
2.34.1