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drm/ast: open key before detect chips

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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@aspeedtech.com>
Reviewed-by: Egbert Eich <eich@suse.de>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Y.C. Chen 2014-09-10 12:07:53 +08:00 committed by Dave Airlie
parent d9f4acd0b4
commit 8f372e250a
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/ast/ast_main.c
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@ -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;