[PATCH 3.16 080/357] drm/ast: open key before detect chips

[Greg Kroah-Hartman]

3.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: "Y.C. Chen" <yc_chen@xxxxxxxxxxxxxx>

commit 8f372e250ae5f4a5faf87ca1a629d0ae59db65b6 upstream.

Some config settings like 3rd TX chips will not get correctly
if the extended reg is protected

Signed-off-by: Y.C. Chen <yc_chen@xxxxxxxxxxxxxx>
Reviewed-by: Egbert Eich <eich@xxxxxxx>
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/gpu/drm/ast/ast_main.c |    1 +
 1 file changed, 1 insertion(+)

--- 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_de
 {
 	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;


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