|author||Jean Delvare <email@example.com>||2009-09-08 15:31:46 +0200|
|committer||Len Brown <firstname.lastname@example.org>||2009-09-27 03:12:13 -0400|
ACPI: Clarify resource conflict message
The message "ACPI: Device needs an ACPI driver" is misleading. The device _may_ need an ACPI driver, if the BIOS implemented a custom API for the device in question (which, AFAIK, can't be checked.) If not, then either a generic ACPI driver may be used (for example "thermal"), or nothing can be done (other than a white list). I propose to reword the message to: ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver which I think is more correct. Comments and suggestions welcome. I also added a message warning about possible problems and system instability when users pass acpi_enforce_resources=lax, as suggested by Len. Signed-off-by: Jean Delvare <email@example.com> Cc: Thomas Renninger <firstname.lastname@example.org> Cc: Alan Jenkins <email@example.com> Signed-off-by: Len Brown <firstname.lastname@example.org>
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 5633b86e3ed..7c1c59ea9ec 100644
@@ -1161,7 +1161,13 @@ int acpi_check_resource_conflict(struct resource *res)
(long long) res_list_elem->start,
(long long) res_list_elem->end);
- printk(KERN_INFO "ACPI: Device needs an ACPI driver\n");
+ 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)