From 7e90560c50f754d65884e251e94c1efa2a4b5784 Mon Sep 17 00:00:00 2001 From: Luca Tettamanti Date: Mon, 30 Mar 2009 00:01:27 +0200 Subject: ACPI: acpi_enforce_resource=strict by default Enforce strict resource checking - disallowing access by native drivers to IO ports and memory regions claimed by ACPI firmware. The patch is mainly aimed to block native hwmon drivers from touching monitoring chips that ACPI thinks it own. If this causes a regression, boot with "acpi_enforce_resources=lax" which was the previous default. http://bugzilla.kernel.org/show_bug.cgi?id=12376 http://bugzilla.kernel.org/show_bug.cgi?id=12541 Signed-off-by: Luca Tettamanti Acked-by: Pavel Machek Acked-by: Jean Delvare Signed-off-by: Len Brown --- drivers/acpi/osl.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/acpi') diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 1e35f342957..f50ca1ea80c 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -1063,9 +1063,9 @@ __setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup); * in arbitrary AML code and can interfere with legacy drivers. * acpi_enforce_resources= can be set to: * - * - strict (2) + * - strict (default) (2) * -> further driver trying to access the resources will not load - * - lax (default) (1) + * - lax (1) * -> further driver trying to access the resources will load, but you * get a system message that something might go wrong... * @@ -1077,7 +1077,7 @@ __setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup); #define ENFORCE_RESOURCES_LAX 1 #define ENFORCE_RESOURCES_NO 0 -static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_LAX; +static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; static int __init acpi_enforce_resources_setup(char *str) { -- cgit v1.2.3-70-g09d2