The patch below does not apply to the 3.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable@xxxxxxxxxxxxxxx>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 61db45ca21630f5ab7f678d54c5d969c21647854 Mon Sep 17 00:00:00 2001 From: Lv Zheng <lv.zheng@xxxxxxxxx> Date: Wed, 26 Feb 2014 10:29:40 +0800 Subject: [PATCH] ACPICA: Restore code that repairs NULL package elements in return values. The original code was lost accidently, it was not generated along with the following commit of mechanism improvements and thus not get merged: Commit: d5a36100f62fa6db5541344e08b361b34e9114c5 Subject: ACPICA: Add mechanism for early object repairs on a per-name basis Adds the framework to allow object repairs very early in the return object analysis. Enables repairs like string->unicode, etc. This patch restores the implementation of the NULL element repair code for ACPI_RTYPE_NONE. In the original design, ACPI_RTYPE_NONE is defined to collect simple NULL object repairs. Lv Zheng. Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=67901 Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx> Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx> Cc: 3.10+ <stable@xxxxxxxxxxxxxxx> # 3.10+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c index 904f7c3e8a0d..21b6402e5245 100644 --- a/drivers/acpi/acpica/nsrepair.c +++ b/drivers/acpi/acpica/nsrepair.c @@ -207,13 +207,30 @@ acpi_ns_simple_repair(struct acpi_evaluate_info *info, * this predefined name. Either one return value is expected, or none, * for both methods and other objects. * - * Exit now if there is no return object. Warning if one was expected. + * Try to fix if there was no return object. Warning if failed to fix. */ if (!return_object) { if (expected_btypes && (!(expected_btypes & ACPI_RTYPE_NONE))) { - ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, - ACPI_WARN_ALWAYS, - "Missing expected return value")); + if (package_index != ACPI_NOT_PACKAGE_ELEMENT) { + ACPI_WARN_PREDEFINED((AE_INFO, + info->full_pathname, + ACPI_WARN_ALWAYS, + "Found unexpected NULL package element")); + + status = + acpi_ns_repair_null_element(info, + expected_btypes, + package_index, + return_object_ptr); + if (ACPI_SUCCESS(status)) { + return (AE_OK); /* Repair was successful */ + } + } else { + ACPI_WARN_PREDEFINED((AE_INFO, + info->full_pathname, + ACPI_WARN_ALWAYS, + "Missing expected return value")); + } return (AE_AML_NO_RETURN_VALUE); } -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html