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authorLuca Tettamanti <kronos.it@gmail.com>2009-03-29 22:01:27 (GMT)
committerLen Brown <len.brown@intel.com>2009-04-02 22:57:46 (GMT)
commit7e90560c50f754d65884e251e94c1efa2a4b5784 (patch)
tree97ae68b0ae4edaebf3de66716759fc09a97deff6 /drivers/acpi
parent8e0ee43bc2c3e19db56a4adaa9a9b04ce885cd84 (diff)
downloadlinux-fsl-qoriq-7e90560c50f754d65884e251e94c1efa2a4b5784.tar.xz
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 <kronos.it@gmail.com> Acked-by: Pavel Machek <pavel@suse.cz> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/osl.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 1e35f34..f50ca1e 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)
{