From: Zhang Rui <rui.zhang@intel.com>
Date: Mon, 22 Mar 2010 07:48:54 +0000 (+0800)
Subject: ACPI: fixes a false alarm from lockdep
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bc73675;p=linux-beck.git

ACPI: fixes a false alarm from lockdep

fixes a false alarm from lockdep, as acpi hotplug workqueue waits other
workqueues.
http://bugzilla.kernel.org/show_bug.cgi?id=14553
https://bugzilla.kernel.org/show_bug.cgi?id=15521

Original-patch-from: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 8e6d8665f0ae..900da68fbb5e 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -758,7 +758,14 @@ static acpi_status __acpi_os_execute(acpi_execute_type type,
 	queue = hp ? kacpi_hotplug_wq :
 		(type == OSL_NOTIFY_HANDLER ? kacpi_notify_wq : kacpid_wq);
 	dpc->wait = hp ? 1 : 0;
-	INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+
+	if (queue == kacpi_hotplug_wq)
+		INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+	else if (queue == kacpi_notify_wq)
+		INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+	else
+		INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+
 	ret = queue_work(queue, &dpc->work);
 
 	if (!ret) {