From: Y.C. Chen <yc_chen@aspeedtech.com>
Date: Wed, 22 Feb 2017 04:14:19 +0000 (+1100)
Subject: drm/ast: Call open_key before enable_mmio in POST code
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9bb92f51558f2ef5f56c257bdcea0588f31d857e;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

drm/ast: Call open_key before enable_mmio in POST code

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>
Cc: <stable@vger.kernel.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/drivers/gpu/drm/ast/ast_post.c b/drivers/gpu/drm/ast/ast_post.c
index a5a780921553..f7d421359d56 100644
--- a/drivers/gpu/drm/ast/ast_post.c
+++ b/drivers/gpu/drm/ast/ast_post.c
@@ -374,8 +374,8 @@ 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->config_mode == ast_use_p2a) {