Merge branch 'bugzilla-13577-video' into release

[safe/jmp/linux-2.6] / drivers / acpi / event.c

diff --git a/drivers/acpi/event.c b/drivers/acpi/event.c
index b7b1432..c511071 100644 (file)
--- a/drivers/acpi/event.c
+++ b/drivers/acpi/event.c
@@ -14,9 +14,12 @@
 #include <net/netlink.h>
 #include <net/genetlink.h>
 
+#include "internal.h"
+
 #define _COMPONENT             ACPI_SYSTEM_COMPONENT
 ACPI_MODULE_NAME("event");
 
+#ifdef CONFIG_ACPI_PROC_EVENT
 /* Global vars for handling event proc entry */
 static DEFINE_SPINLOCK(acpi_system_event_lock);
 int event_is_open = 0;
@@ -101,11 +104,41 @@ static unsigned int acpi_system_poll_event(struct file *file, poll_table * wait)
 }
 
 static const struct file_operations acpi_system_event_ops = {
+       .owner = THIS_MODULE,
        .open = acpi_system_open_event,
        .read = acpi_system_read_event,
        .release = acpi_system_close_event,
        .poll = acpi_system_poll_event,
 };
+#endif /* CONFIG_ACPI_PROC_EVENT */
+
+/* ACPI notifier chain */
+static BLOCKING_NOTIFIER_HEAD(acpi_chain_head);
+
+int acpi_notifier_call_chain(struct acpi_device *dev, u32 type, u32 data)
+{
+       struct acpi_bus_event event;
+
+       strcpy(event.device_class, dev->pnp.device_class);
+       strcpy(event.bus_id, dev->pnp.bus_id);
+       event.type = type;
+       event.data = data;
+       return (blocking_notifier_call_chain(&acpi_chain_head, 0, (void *)&event)
+                        == NOTIFY_BAD) ? -EINVAL : 0;
+}
+EXPORT_SYMBOL(acpi_notifier_call_chain);
+
+int register_acpi_notifier(struct notifier_block *nb)
+{
+       return blocking_notifier_chain_register(&acpi_chain_head, nb);
+}
+EXPORT_SYMBOL(register_acpi_notifier);
+
+int unregister_acpi_notifier(struct notifier_block *nb)
+{
+       return blocking_notifier_chain_unregister(&acpi_chain_head, nb);
+}
+EXPORT_SYMBOL(unregister_acpi_notifier);
 
 #ifdef CONFIG_NET
 static unsigned int acpi_event_seqnum;
@@ -204,11 +237,7 @@ int acpi_bus_generate_netlink_event(const char *device_class,
                return result;
        }
 
-       result =
-           genlmsg_multicast(skb, 0, acpi_event_mcgrp.id, GFP_ATOMIC);
-       if (result)
-               ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                 "Failed to send a Genetlink message!\n"));
+       genlmsg_multicast(skb, 0, acpi_event_mcgrp.id, GFP_ATOMIC);
        return 0;
 }
 
@@ -231,13 +260,14 @@ static int acpi_event_genetlink_init(void)
 }
 
 #else
-int acpi_bus_generate_netlink_event(struct acpi_device *device, u8 type,
-                                     int data)
+int acpi_bus_generate_netlink_event(const char *device_class,
+                                     const char *bus_id,
+                                     u8 type, int data)
 {
        return 0;
 }
 
-EXPORT_SYMBOL(acpi_generate_netlink_event);
+EXPORT_SYMBOL(acpi_bus_generate_netlink_event);
 
 static int acpi_event_genetlink_init(void)
 {
@@ -247,7 +277,9 @@ static int acpi_event_genetlink_init(void)
 
 static int __init acpi_event_init(void)
 {
+#ifdef CONFIG_ACPI_PROC_EVENT
        struct proc_dir_entry *entry;
+#endif
        int error = 0;
 
        if (acpi_disabled)
@@ -259,12 +291,13 @@ static int __init acpi_event_init(void)
                printk(KERN_WARNING PREFIX
                       "Failed to create genetlink family for ACPI event\n");
 
+#ifdef CONFIG_ACPI_PROC_EVENT
        /* 'event' [R] */
-       entry = create_proc_entry("event", S_IRUSR, acpi_root_dir);
-       if (entry)
-               entry->proc_fops = &acpi_system_event_ops;
-       else
+       entry = proc_create("event", S_IRUSR, acpi_root_dir,
+                           &acpi_system_event_ops);
+       if (!entry)
                return -ENODEV;
+#endif
 
        return 0;
 }