1 files changed, 4 insertions, 88 deletions

diff --git a/drivers/acpi/debugfs.c b/drivers/acpi/debugfs.c
index 384f7abcff77..182a9fc36355 100644
--- a/drivers/acpi/debugfs.c
+++ b/drivers/acpi/debugfs.c
@@ -3,100 +3,16 @@
  */
 
 #include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/uaccess.h>
 #include <linux/debugfs.h>
 #include <acpi/acpi_drivers.h>
 
 #define _COMPONENT		ACPI_SYSTEM_COMPONENT
 ACPI_MODULE_NAME("debugfs");
 
+struct dentry *acpi_debugfs_dir;
+EXPORT_SYMBOL_GPL(acpi_debugfs_dir);
 
-/* /sys/modules/acpi/parameters/aml_debug_output */
-
-module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object,
-		   bool, 0644);
-MODULE_PARM_DESC(aml_debug_output,
-		 "To enable/disable the ACPI Debug Object output.");
-
-/* /sys/kernel/debug/acpi/custom_method */
-
-static ssize_t cm_write(struct file *file, const char __user * user_buf,
-			size_t count, loff_t *ppos)
+void __init acpi_debugfs_init(void)
 {
-	static char *buf;
-	static u32 max_size;
-	static u32 uncopied_bytes;
-
-	struct acpi_table_header table;
-	acpi_status status;
-
-	if (!(*ppos)) {
-		/* parse the table header to get the table length */
-		if (count <= sizeof(struct acpi_table_header))
-			return -EINVAL;
-		if (copy_from_user(&table, user_buf,
-				   sizeof(struct acpi_table_header)))
-			return -EFAULT;
-		uncopied_bytes = max_size = table.length;
-		buf = kzalloc(max_size, GFP_KERNEL);
-		if (!buf)
-			return -ENOMEM;
-	}
-
-	if (buf == NULL)
-		return -EINVAL;
-
-	if ((*ppos > max_size) ||
-	    (*ppos + count > max_size) ||
-	    (*ppos + count < count) ||
-	    (count > uncopied_bytes))
-		return -EINVAL;
-
-	if (copy_from_user(buf + (*ppos), user_buf, count)) {
-		kfree(buf);
-		buf = NULL;
-		return -EFAULT;
-	}
-
-	uncopied_bytes -= count;
-	*ppos += count;
-
-	if (!uncopied_bytes) {
-		status = acpi_install_method(buf);
-		kfree(buf);
-		buf = NULL;
-		if (ACPI_FAILURE(status))
-			return -EINVAL;
-		add_taint(TAINT_OVERRIDDEN_ACPI_TABLE);
-	}
-
-	return count;
-}
-
-static const struct file_operations cm_fops = {
-	.write = cm_write,
-	.llseek = default_llseek,
-};
-
-int __init acpi_debugfs_init(void)
-{
-	struct dentry *acpi_dir, *cm_dentry;
-
-	acpi_dir = debugfs_create_dir("acpi", NULL);
-	if (!acpi_dir)
-		goto err;
-
-	cm_dentry = debugfs_create_file("custom_method", S_IWUSR,
-					acpi_dir, NULL, &cm_fops);
-	if (!cm_dentry)
-		goto err;
-
-	return 0;
-
-err:
-	if (acpi_dir)
-		debugfs_remove(acpi_dir);
-	return -EINVAL;
+	acpi_debugfs_dir = debugfs_create_dir("acpi", NULL);
 }