ACPI: Split out custom_method functionality into an own driver
[linux-2.6.git] / drivers / acpi / debugfs.c
index e7abc6e..182a9fc 100644 (file)
@@ -3,9 +3,6 @@
  */
 
 #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>
 
 ACPI_MODULE_NAME("debugfs");
 
 struct dentry *acpi_debugfs_dir;
-static struct dentry *cm_dentry;
-
-/* /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)
-{
-       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,
-};
-
-static int __init acpi_custom_method_init(void)
-{
-       if (!acpi_debugfs_dir)
-               return -ENOENT;
-
-       cm_dentry = debugfs_create_file("custom_method", S_IWUSR,
-                                       acpi_debugfs_dir, NULL, &cm_fops);
-       if (!cm_dentry)
-               return -ENODEV;
-
-       return 0;
-}
+EXPORT_SYMBOL_GPL(acpi_debugfs_dir);
 
 void __init acpi_debugfs_init(void)
 {
        acpi_debugfs_dir = debugfs_create_dir("acpi", NULL);
-
-       acpi_custom_method_init();
 }