summaryrefslogtreecommitdiff
path: root/drivers/acpi/osl.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi/osl.c')
-rw-r--r--drivers/acpi/osl.c38
1 files changed, 14 insertions, 24 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 0418febc5cf2..326ce7f1b0d9 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -1458,38 +1458,28 @@ __setup("acpi_enforce_resources=", acpi_enforce_resources_setup);
int acpi_check_resource_conflict(const struct resource *res)
{
acpi_adr_space_type space_id;
- acpi_size length;
- u8 warn = 0;
- int clash = 0;
if (acpi_enforce_resources == ENFORCE_RESOURCES_NO)
return 0;
- if (!(res->flags & IORESOURCE_IO) && !(res->flags & IORESOURCE_MEM))
- return 0;
if (res->flags & IORESOURCE_IO)
space_id = ACPI_ADR_SPACE_SYSTEM_IO;
- else
+ else if (res->flags & IORESOURCE_MEM)
space_id = ACPI_ADR_SPACE_SYSTEM_MEMORY;
+ else
+ return 0;
+
+ if (!acpi_check_address_range(space_id, res->start, resource_size(res), 1))
+ return 0;
+
+ pr_info("Resource conflict; ACPI support missing from driver?\n");
+
+ if (acpi_enforce_resources == ENFORCE_RESOURCES_STRICT)
+ return -EBUSY;
+
+ if (acpi_enforce_resources == ENFORCE_RESOURCES_LAX)
+ pr_notice("Resource conflict: System may be unstable or behave erratically\n");
- length = resource_size(res);
- if (acpi_enforce_resources != ENFORCE_RESOURCES_NO)
- warn = 1;
- clash = acpi_check_address_range(space_id, res->start, length, warn);
-
- if (clash) {
- if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) {
- if (acpi_enforce_resources == ENFORCE_RESOURCES_LAX)
- printk(KERN_NOTICE "ACPI: This conflict may"
- " cause random problems and system"
- " instability\n");
- printk(KERN_INFO "ACPI: If an ACPI driver is available"
- " for this device, you should use it instead of"
- " the native driver\n");
- }
- if (acpi_enforce_resources == ENFORCE_RESOURCES_STRICT)
- return -EBUSY;
- }
return 0;
}
EXPORT_SYMBOL(acpi_check_resource_conflict);