1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
index a2cc6be97983..b027e332caa5 100644
--- a/drivers/gpu/drm/ast/ast_main.c
+++ b/drivers/gpu/drm/ast/ast_main.c
@@ -67,6 +67,7 @@ static int ast_detect_chip(struct drm_device *dev)
 {
         struct ast_private *ast = dev->dev_private;
         uint32_t data, jreg;
+        ast_open_key(ast);
 
         if (dev->pdev->device == PCI_CHIP_AST1180) {
                 ast->chip = AST1100;