From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:42385 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751149AbbEBQsj (ORCPT ); Sat, 2 May 2015 12:48:39 -0400 Subject: Patch "ACPI / scan: Annotate physical_node_lock in acpi_scan_is_offline()" has been added to the 3.14-stable tree To: rafael.j.wysocki@intel.com, gregkh@linuxfoundation.org, toshi.kani@hp.com, xiexiuqi@huawei.com Cc: , From: Date: Sat, 02 May 2015 18:48:35 +0200 Message-ID: <1430585315158198@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled ACPI / scan: Annotate physical_node_lock in acpi_scan_is_offline() to the 3.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: acpi-scan-annotate-physical_node_lock-in-acpi_scan_is_offline.patch and it can be found in the queue-3.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 4c533c801d1c9b5c38458a0e7516e0cf50643782 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sat, 18 Apr 2015 01:25:46 +0200 Subject: ACPI / scan: Annotate physical_node_lock in acpi_scan_is_offline() From: "Rafael J. Wysocki" commit 4c533c801d1c9b5c38458a0e7516e0cf50643782 upstream. acpi_scan_is_offline() may be called under the physical_node_lock lock of the given device object's parent, so prevent lockdep from complaining about that by annotating that instance with SINGLE_DEPTH_NESTING. Fixes: caa73ea158de (ACPI / hotplug / driver core: Handle containers in a special way) Reported-and-tested-by: Xie XiuQi Reviewed-by: Toshi Kani Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman --- drivers/acpi/scan.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -192,7 +192,11 @@ bool acpi_scan_is_offline(struct acpi_de struct acpi_device_physical_node *pn; bool offline = true; - mutex_lock(&adev->physical_node_lock); + /* + * acpi_container_offline() calls this for all of the container's + * children under the container's physical_node_lock lock. + */ + mutex_lock_nested(&adev->physical_node_lock, SINGLE_DEPTH_NESTING); list_for_each_entry(pn, &adev->physical_node_list, node) if (device_supports_offline(pn->dev) && !pn->dev->offline) { Patches currently in stable-queue which might be from rafael.j.wysocki@intel.com are queue-3.14/acpi-scan-annotate-physical_node_lock-in-acpi_scan_is_offline.patch queue-3.14/acpica-utilities-split-io-address-types-from-data-type-models.patch