1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index d67a1fe07f0e..5837f857ac2e 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -278,12 +278,13 @@ acpi_table_parse_madt(enum acpi_madt_type id,
 
 /**
  * acpi_table_parse - find table with @id, run @handler on it
- *
  * @id: table id to find
  * @handler: handler to run
  *
  * Scan the ACPI System Descriptor Table (STD) for a table matching @id,
- * run @handler on it.  Return 0 if table found, return on if not.
+ * run @handler on it.
+ *
+ * Return 0 if table found, -errno if not.
  */
 int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
 {
@@ -293,7 +294,7 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
         if (acpi_disabled)
                 return -ENODEV;
 
-        if (!handler)
+        if (!id || !handler)
                 return -EINVAL;
 
         if (strncmp(id, ACPI_SIG_MADT, 4) == 0)
@@ -306,7 +307,7 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
                 early_acpi_os_unmap_memory(table, tbl_size);
                 return 0;
         } else
-                return 1;
+                return -ENODEV;
 }
 
 /* 
@@ -351,7 +352,7 @@ int __init acpi_table_init(void)
 
         status = acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);
         if (ACPI_FAILURE(status))
-                return 1;
+                return -EINVAL;
 
         check_multiple_madt();
         return 0;