drm/radeon/kms: move blit initialization after we disabled VGA

VGA might be overwritting VRAM and corrupt our blit shader leading
to corruption, it likely won't happen if you load fbcon right after
radeon. Thanks to Shawn Starr and Andre Maasikas for tracking down
this issue.
Signed-off-by: NJerome Glisse <jglisse@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/r600.c

@@ -1861,6 +1861,12 @@ int r600_startup(struct radeon_device *rdev)
 			return r;
 	}
 	r600_gpu_init(rdev);
+	r = r600_blit_init(rdev);
+	if (r) {
+		r600_blit_fini(rdev);
+		rdev->asic->copy = NULL;
+		dev_warn(rdev->dev, "failed blitter (%d) falling back to memcpy\n", r);
+	}
 	/* pin copy shader into vram */
 	if (rdev->r600_blit.shader_obj) {
 		r = radeon_bo_reserve(rdev->r600_blit.shader_obj, false);
@@ -2045,12 +2051,6 @@ int r600_init(struct radeon_device *rdev)
 	r = r600_pcie_gart_init(rdev);
 	if (r)
 		return r;
-	r = r600_blit_init(rdev);
-	if (r) {
-		r600_blit_fini(rdev);
-		rdev->asic->copy = NULL;
-		dev_warn(rdev->dev, "failed blitter (%d) falling back to memcpy\n", r);
-	}
 
 	rdev->accel_working = true;
 	r = r600_startup(rdev);

drivers/gpu/drm/radeon/rv770.c

@@ -887,6 +887,12 @@ static int rv770_startup(struct radeon_device *rdev)
 			return r;
 	}
 	rv770_gpu_init(rdev);
+	r = r600_blit_init(rdev);
+	if (r) {
+		r600_blit_fini(rdev);
+		rdev->asic->copy = NULL;
+		dev_warn(rdev->dev, "failed blitter (%d) falling back to memcpy\n", r);
+	}
 	/* pin copy shader into vram */
 	if (rdev->r600_blit.shader_obj) {
 		r = radeon_bo_reserve(rdev->r600_blit.shader_obj, false);
@@ -1055,12 +1061,6 @@ int rv770_init(struct radeon_device *rdev)
 	r = r600_pcie_gart_init(rdev);
 	if (r)
 		return r;
-	r = r600_blit_init(rdev);
-	if (r) {
-		r600_blit_fini(rdev);
-		rdev->asic->copy = NULL;
-		dev_warn(rdev->dev, "failed blitter (%d) falling back to memcpy\n", r);
-	}
 
 	rdev->accel_working = true;
 	r = rv770_startup(rdev);