From: Deak, Imre
Subject: 4.9-rc1: [TMP_] ACPI namespace lookup failure, AE_ALREADY_EXISTS
after upgrading to 4.9-rc1 I get the following errors occasionally
during boot and suspend-to-ram on an APL system:
[ 59.513434] ACPI Error: [TMP_] Namespace lookup failure, AE_ALREADY_EXISTS
[ 59.513446] ACPI Exception: AE_ALREADY_EXISTS, During name lookup/catalog
[ 59.513469] ACPI Error: Method parse/execution failed [\_SB.PCI0.SCPG]
[ 59.515415] ACPI Error: Method parse/execution failed [\_SB.PCI0.SDHA._PS3] (Node
[ 59.517118] ACPI: Marking method _PS3 as Serialized because of AE_ALREADY_EXISTS
Other than these error messages, booting and suspend/resume seems to work ok.
Bisecting points to
Author: Lv Zheng <lv.zheng(a)intel.com>
Date: Wed Sep 7 14:07:10 2016 +0800
ACPICA: Namespace: Fix dynamic table loading issues
Reverting this on top of 4.9-rc1 gets rid of the error messages.
The commit in question only modified code to make locks unlocked/locked.
Which should be transparent to the functional stuffs.
I'm not sure how it can lead to such error in the single-threading boot environment.
Please provide the acpidump output for further investigation.
Thanks and best regards