From a707edebadf1230f202000f29b28b7586ada4aa3 Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Tue, 3 May 2016 16:48:32 +0800 Subject: ACPI / osi: Add acpi_osi=!! to allow reverting acpi_osi=! This patch introduces acpi_osi=!! so that quirks may use it to revert acpi_osi=!. Tested-by: Lukas Wunner Tested-by: Chen Yu Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- Documentation/kernel-parameters.txt | 2 ++ drivers/acpi/osl.c | 3 +++ 2 files changed, 5 insertions(+) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 0b3de80ec8f6..c48f387109e8 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -312,6 +312,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted. acpi_osi=!* # remove all strings acpi_osi=! # disable all built-in OS vendor strings + acpi_osi=!! # enable all built-in OS vendor + strings acpi_osi= # disable all strings 'acpi_osi=!' can be used in combination with single or diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 9f59dd1a0af7..f801b59f2a94 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -1763,6 +1763,9 @@ void __init acpi_osi_setup(char *str) osi->enable = false; } return; + } else if (*str == '!') { + osi_config.default_disabling = 0; + return; } enable = false; } -- cgit v1.2.3