linux-kernel - [PATCH v3 01/10] ACPI, DOCK: avoid initializing acpi_dock_notifier

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Date:	Sat, 29 Jun 2013 00:24:34 +0800
From:	Jiang Liu <liuj97@...il.com>
To:	"Rafael J . Wysocki" <rjw@...k.pl>
Cc:	liuj97@...il.com, Jiang Liu <jiang.liu@...wei.com>,
	Yijing Wang <wangyijing@...wei.com>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Len Brown <lenb@...nel.org>
Subject: [PATCH v3 01/10] ACPI, DOCK: avoid initializing acpi_dock_notifier_list multiple times

From: Jiang Liu <jiang.liu@...wei.com>

Function dock_add() will be called multiple times if there are multiple
dock stations, which causes acpi_dock_notifier_list being initialized
multiple times. So move initialization of acpi_dock_notifier_list from
dock_add() to acpi_dock_init().

Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
Cc: Len Brown <lenb@...nel.org>
Cc: "Rafael J. Wysocki" <rjw@...k.pl>
Cc: linux-acpi@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 drivers/acpi/dock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 14de9f4..e944e39 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -1007,7 +1007,6 @@ static int __init dock_add(acpi_handle handle)
 	mutex_init(&dock_station->hp_lock);
 	spin_lock_init(&dock_station->dd_lock);
 	INIT_LIST_HEAD(&dock_station->sibling);
-	ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list);
 	INIT_LIST_HEAD(&dock_station->dependent_devices);
 
 	/* we want the dock device to send uevents */
@@ -1078,6 +1077,7 @@ int __init acpi_dock_init(void)
 		return 0;
 	}
 
+	ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list);
 	register_acpi_bus_notifier(&dock_acpi_notifier);
 	pr_info(PREFIX "%s: %d docks/bays found\n",
 		ACPI_DOCK_DRIVER_DESCRIPTION, dock_station_count);
-- 
1.8.1.2

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