drm/ast: Fixed vram size incorrect issue on POWER

The default value of VGA scratch may incorrect.
Should initial h/w before get vram info.

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

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
index 8e8c0310245f..262c2c0e43b4 100644
--- a/drivers/gpu/drm/ast/ast_main.c
+++ b/drivers/gpu/drm/ast/ast_main.c
@@ -518,6 +518,9 @@ int ast_driver_load(struct drm_device *dev, unsigned long flags)
 
         ast_detect_chip(dev, &need_post);
 
+        if (need_post)
+                ast_post_gpu(dev);
+
         if (ast->chip != AST1180) {
                 ret = ast_get_dram_info(dev);
                 if (ret)
@@ -528,9 +531,6 @@ int ast_driver_load(struct drm_device *dev, unsigned long flags)
                          ast->dram_bus_width, ast->vram_size);
         }
 
-        if (need_post)
-                ast_post_gpu(dev);
-
         ret = ast_mm_init(ast);
         if (ret)
                 goto out_free;