[PATCH 11/12] drm/ast: Fix test for VGA enabled

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

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

(Get better description from Aspeed)

Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 drivers/gpu/drm/ast/ast_post.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/ast/ast_post.c b/drivers/gpu/drm/ast/ast_post.c
index c15f643..a5a7809 100644
--- a/drivers/gpu/drm/ast/ast_post.c
+++ b/drivers/gpu/drm/ast/ast_post.c
@@ -59,13 +59,9 @@ bool ast_is_vga_enabled(struct drm_device *dev)
 		/* TODO 1180 */
 	} else {
 		ch = ast_io_read8(ast, AST_IO_VGA_ENABLE_PORT);
-		if (ch) {
-			ast_open_key(ast);
-			ch = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb6, 0xff);
-			return ch & 0x04;
-		}
+		return !!(ch & 0x01);
 	}
-	return 0;
+	return false;
 }
 
 static const u8 extreginfo[] = { 0x0f, 0x04, 0x1c, 0xff };
-- 
2.9.3