ACPI: Remove the old /proc/acpi/event interface

It is quite some time that this one has been deprecated.
Get rid of it.

Should some really important user be overseen, it may be reverted and
the userspace program worked on first, but it is time to do something
to get rid of this old stuff...

Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: Matthew Garrett <matthew.garrett@nebula.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 0 insertions, 106 deletions

diff --git a/drivers/acpi/event.c b/drivers/acpi/event.c
index 1442737cedec..8247fcdde079 100644
--- a/drivers/acpi/event.c
+++ b/drivers/acpi/event.c
@@ -21,100 +21,6 @@
 #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;
-extern struct list_head acpi_bus_event_list;
-extern wait_queue_head_t acpi_bus_event_queue;
-
-static int acpi_system_open_event(struct inode *inode, struct file *file)
-{
-        spin_lock_irq(&acpi_system_event_lock);
-
-        if (event_is_open)
-                goto out_busy;
-
-        event_is_open = 1;
-
-        spin_unlock_irq(&acpi_system_event_lock);
-        return 0;
-
-      out_busy:
-        spin_unlock_irq(&acpi_system_event_lock);
-        return -EBUSY;
-}
-
-static ssize_t
-acpi_system_read_event(struct file *file, char __user * buffer, size_t count,
-                       loff_t * ppos)
-{
-        int result = 0;
-        struct acpi_bus_event event;
-        static char str[ACPI_MAX_STRING];
-        static int chars_remaining = 0;
-        static char *ptr;
-
-        if (!chars_remaining) {
-                memset(&event, 0, sizeof(struct acpi_bus_event));
-
-                if ((file->f_flags & O_NONBLOCK)
-                    && (list_empty(&acpi_bus_event_list)))
-                        return -EAGAIN;
-
-                result = acpi_bus_receive_event(&event);
-                if (result)
-                        return result;
-
-                chars_remaining = sprintf(str, "%s %s %08x %08x\n",
-                                          event.device_class ? event.
-                                          device_class : "<unknown>",
-                                          event.bus_id ? event.
-                                          bus_id : "<unknown>", event.type,
-                                          event.data);
-                ptr = str;
-        }
-
-        if (chars_remaining < count) {
-                count = chars_remaining;
-        }
-
-        if (copy_to_user(buffer, ptr, count))
-                return -EFAULT;
-
-        *ppos += count;
-        chars_remaining -= count;
-        ptr += count;
-
-        return count;
-}
-
-static int acpi_system_close_event(struct inode *inode, struct file *file)
-{
-        spin_lock_irq(&acpi_system_event_lock);
-        event_is_open = 0;
-        spin_unlock_irq(&acpi_system_event_lock);
-        return 0;
-}
-
-static unsigned int acpi_system_poll_event(struct file *file, poll_table * wait)
-{
-        poll_wait(file, &acpi_bus_event_queue, wait);
-        if (!list_empty(&acpi_bus_event_list))
-                return POLLIN | POLLRDNORM;
-        return 0;
-}
-
-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,
-        .llseek = default_llseek,
-};
-#endif  /* CONFIG_ACPI_PROC_EVENT */
-
 /* ACPI notifier chain */
 static BLOCKING_NOTIFIER_HEAD(acpi_chain_head);
 
@@ -280,9 +186,6 @@ 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)
@@ -293,15 +196,6 @@ static int __init acpi_event_init(void)
         if (error)
                 printk(KERN_WARNING PREFIX
                        "Failed to create genetlink family for ACPI event\n");
-
-#ifdef CONFIG_ACPI_PROC_EVENT
-        /* 'event' [R] */
-        entry = proc_create("event", S_IRUSR, acpi_root_dir,
-                            &acpi_system_event_ops);
-        if (!entry)
-                return -ENODEV;
-#endif
-
         return 0;
 }