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authorJean Delvare <jdelvare@suse.de>2009-09-08 15:31:46 +0200
committerLen Brown <len.brown@intel.com>2009-09-27 03:12:13 -0400
commit14f03343ad1080c2fea29ab2c13f05b976c4584e (patch)
treeec3b36bc0a274ea382f5816a6919d82a59ac110f
parentb684a3637e0887683a0a3d6fd471fc41d7c1606a (diff)
downloadlinux-linaro-14f03343ad1080c2fea29ab2c13f05b976c4584e.tar.gz
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 <jdelvare@suse.de> Cc: Thomas Renninger <trenn@suse.de> Cc: Alan Jenkins <sourcejedi.lkml@googlemail.com> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--drivers/acpi/osl.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 5633b86e3ed..7c1c59ea9ec 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -1161,7 +1161,13 @@ int acpi_check_resource_conflict(struct resource *res)
res_list_elem->name,
(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)
return -EBUSY;