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

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Date:	Fri,  3 Oct 2014 14:27:46 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, "Y.C. Chen" <yc_chen@...eedtech.com>,
	Egbert Eich <eich@...e.de>, Dave Airlie <airlied@...hat.com>
Subject: [PATCH 3.16 080/357] drm/ast: open key before detect chips

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

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

From: "Y.C. Chen" <yc_chen@...eedtech.com>

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@...eedtech.com>
Reviewed-by: Egbert Eich <eich@...e.de>
Signed-off-by: Dave Airlie <airlied@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 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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