From: Prarit Bhargava <prarit@xxxxxxxxxx>
Fix bug which will cause acpiphp to not be able to load when dock.ko
cannot load.
Signed-off-by: Prarit Bhargava <prarit@xxxxxxxxxx>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@xxxxxxxxx>
---
drivers/acpi/dock.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
--- kristen-2.6.orig/drivers/acpi/dock.c
+++ kristen-2.6/drivers/acpi/dock.c
@@ -443,6 +443,9 @@ static int dock_in_progress(struct dock_
*/
int register_dock_notifier(struct notifier_block *nb)
{
+ if (!dock_station)
+ return -ENODEV;
+
return atomic_notifier_chain_register(&dock_notifier_list, nb);
}
@@ -454,6 +457,9 @@ EXPORT_SYMBOL_GPL(register_dock_notifier
*/
void unregister_dock_notifier(struct notifier_block *nb)
{
+ if (!dock_station)
+ return;
+
atomic_notifier_chain_unregister(&dock_notifier_list, nb);
}
@@ -806,7 +812,7 @@ static int __init dock_init(void)
ACPI_UINT32_MAX, find_dock, &num, NULL);
if (!num)
- return -ENODEV;
+ printk(KERN_INFO "No dock devices found.\n");
return 0;
}
--
-
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