Hi All, The purpose of this series is to get rid of the remaining (questionable) usage of ACPI_EXCEPTION() outside ACPICA. The first patch is a tiny cleanup of the ACPI processor driver, but it is depended on by the second one which in turn is depended on by the last two. The second patch introduces a new helper function for logging messages regarding ACPI object evaluation failures and makes some code under drivers/acpi/ use it. The other two patches use the new helper to get rid of ACPI_EXCEPTION() and the related definitions from the acpi-als and acpi_power_meter drivers. Please see the patch changelogs for details. Thanks!