Patch "drm/ast: Call open_key before enable_mmio in POST code" has been added to the 4.9-stable tree

Patch "drm/ast: Call open_key before enable_mmio in POST code" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    drm/ast: Call open_key before enable_mmio in POST code

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-ast-call-open_key-before-enable_mmio-in-post-code.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 9bb92f51558f2ef5f56c257bdcea0588f31d857e Mon Sep 17 00:00:00 2001
From: "Y.C. Chen" <yc_chen@aspeedtech.com>
Date: Wed, 22 Feb 2017 15:14:19 +1100
Subject: drm/ast: Call open_key before enable_mmio in POST code

From: Y.C. Chen <yc_chen@aspeedtech.com>

commit 9bb92f51558f2ef5f56c257bdcea0588f31d857e upstream.

open_key enables access the registers used by enable_mmio

Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Joel Stanley <joel@jms.id.au>
Tested-by: Y.C. Chen <yc_chen@aspeedtech.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/ast/ast_post.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/ast/ast_post.c
+++ b/drivers/gpu/drm/ast/ast_post.c
@@ -371,8 +371,8 @@ void ast_post_gpu(struct drm_device *dev
 	pci_write_config_dword(ast->dev->pdev, 0x04, reg);
 
 	ast_enable_vga(dev);
-	ast_enable_mmio(dev);
 	ast_open_key(ast);
+	ast_enable_mmio(dev);
 	ast_set_def_ext_reg(dev);
 
 	if (ast->chip == AST2300 || ast->chip == AST2400)


Patches currently in stable-queue which might be from yc_chen@aspeedtech.com are

queue-4.9/drm-ast-fix-ast2400-post-failure-without-bmc-fw-or-vbios.patch
queue-4.9/drm-ast-call-open_key-before-enable_mmio-in-post-code.patch
queue-4.9/drm-ast-fix-test-for-vga-enabled.patch