X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Facpi%2Fevent.c;h=959a893c8d1fdbd45d415c4a8a50c954ac498050;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=43c49f66a3283b8fa20f7ea796eb9402ef6f4028;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git

diff --git a/drivers/acpi/event.c b/drivers/acpi/event.c
index 43c49f66a..959a893c8 100644
--- a/drivers/acpi/event.c
+++ b/drivers/acpi/event.c
@@ -13,64 +13,59 @@
 #include <acpi/acpi_drivers.h>
 
 #define _COMPONENT		ACPI_SYSTEM_COMPONENT
-ACPI_MODULE_NAME		("event")
+ACPI_MODULE_NAME("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;
+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)
+static int acpi_system_open_event(struct inode *inode, struct file *file)
 {
-	spin_lock_irq (&acpi_system_event_lock);
+	spin_lock_irq(&acpi_system_event_lock);
 
-	if(event_is_open)
+	if (event_is_open)
 		goto out_busy;
 
 	event_is_open = 1;
 
-	spin_unlock_irq (&acpi_system_event_lock);
+	spin_unlock_irq(&acpi_system_event_lock);
 	return 0;
 
-out_busy:
-	spin_unlock_irq (&acpi_system_event_lock);
+      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)
+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;
+	int result = 0;
+	struct acpi_bus_event event;
+	static char str[ACPI_MAX_STRING];
+	static int chars_remaining = 0;
+	static char *ptr;
 
 
-	ACPI_FUNCTION_TRACE("acpi_system_read_event");
-
 	if (!chars_remaining) {
 		memset(&event, 0, sizeof(struct acpi_bus_event));
 
 		if ((file->f_flags & O_NONBLOCK)
 		    && (list_empty(&acpi_bus_event_list)))
-			return_VALUE(-EAGAIN);
+			return -EAGAIN;
 
 		result = acpi_bus_receive_event(&event);
-		if (result) {
-			return_VALUE(-EIO);
-		}
-
-		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);
+		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;
 	}
 
@@ -79,28 +74,24 @@ acpi_system_read_event (
 	}
 
 	if (copy_to_user(buffer, ptr, count))
-		return_VALUE(-EFAULT);
+		return -EFAULT;
 
 	*ppos += count;
 	chars_remaining -= count;
 	ptr += count;
 
-	return_VALUE(count);
+	return count;
 }
 
-static int
-acpi_system_close_event(struct inode *inode, struct file *file)
+static int acpi_system_close_event(struct inode *inode, struct file *file)
 {
-	spin_lock_irq (&acpi_system_event_lock);
+	spin_lock_irq(&acpi_system_event_lock);
 	event_is_open = 0;
-	spin_unlock_irq (&acpi_system_event_lock);
+	spin_unlock_irq(&acpi_system_event_lock);
 	return 0;
 }
 
-static unsigned int
-acpi_system_poll_event(
-	struct file		*file,
-	poll_table		*wait)
+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))
@@ -108,33 +99,30 @@ acpi_system_poll_event(
 	return 0;
 }
 
-static struct file_operations acpi_system_event_ops = {
-	.open =		acpi_system_open_event,
-	.read =		acpi_system_read_event,
-	.release =	acpi_system_close_event,
-	.poll =		acpi_system_poll_event,
+static const struct file_operations acpi_system_event_ops = {
+	.open = acpi_system_open_event,
+	.read = acpi_system_read_event,
+	.release = acpi_system_close_event,
+	.poll = acpi_system_poll_event,
 };
 
 static int __init acpi_event_init(void)
 {
-	struct proc_dir_entry	*entry;
+	struct proc_dir_entry *entry;
 	int error = 0;
 
-	ACPI_FUNCTION_TRACE("acpi_event_init");
 
 	if (acpi_disabled)
-		return_VALUE(0);
+		return 0;
 
 	/* 'event' [R] */
 	entry = create_proc_entry("event", S_IRUSR, acpi_root_dir);
 	if (entry)
 		entry->proc_fops = &acpi_system_event_ops;
 	else {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, 
-				  "Unable to create '%s' proc fs entry\n","event" ));
-		error = -EFAULT;
+		error = -ENODEV;
 	}
-	return_VALUE(error);
+	return error;
 }
 
 subsys_initcall(acpi_event_init);