linux-kernel - [PATCH v4 12/16] drm/bochs: move ttm_bo_(un)reserve calls into bochs_bo

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Date:   Fri, 11 Jan 2019 06:37:48 +0100
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     dri-devel@...ts.freedesktop.org, David Airlie <airlied@...hat.com>
Cc:     andr2000@...il.com, noralf@...nnes.org,
        Gerd Hoffmann <kraxel@...hat.com>,
        David Airlie <airlied@...ux.ie>,
        virtualization@...ts.linux-foundation.org (open list:DRM DRIVER FOR
        BOCHS VIRTUAL GPU), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v4 12/16] drm/bochs: move ttm_bo_(un)reserve calls into bochs_bo_{pin,unpin}

Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
Acked-by: Daniel Vetter <daniel.vetter@...ll.ch>
---
 drivers/gpu/drm/bochs/bochs_fbdev.c |  8 --------
 drivers/gpu/drm/bochs/bochs_kms.c   | 14 +-------------
 drivers/gpu/drm/bochs/bochs_mm.c    |  8 ++++++++
 3 files changed, 9 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/bochs/bochs_fbdev.c b/drivers/gpu/drm/bochs/bochs_fbdev.c
index 92feb817ff..ccf783b038 100644
--- a/drivers/gpu/drm/bochs/bochs_fbdev.c
+++ b/drivers/gpu/drm/bochs/bochs_fbdev.c
@@ -77,14 +77,9 @@ static int bochsfb_create(struct drm_fb_helper *helper,
 
 	bo = gem_to_bochs_bo(gobj);
 
-	ret = ttm_bo_reserve(&bo->bo, true, false, NULL);
-	if (ret)
-		return ret;
-
 	ret = bochs_bo_pin(bo, TTM_PL_FLAG_VRAM);
 	if (ret) {
 		DRM_ERROR("failed to pin fbcon\n");
-		ttm_bo_unreserve(&bo->bo);
 		return ret;
 	}
 
@@ -92,12 +87,9 @@ static int bochsfb_create(struct drm_fb_helper *helper,
 			  &bo->kmap);
 	if (ret) {
 		DRM_ERROR("failed to kmap fbcon\n");
-		ttm_bo_unreserve(&bo->bo);
 		return ret;
 	}
 
-	ttm_bo_unreserve(&bo->bo);
-
 	/* init fb device */
 	info = drm_fb_helper_alloc_fbi(helper);
 	if (IS_ERR(info)) {
diff --git a/drivers/gpu/drm/bochs/bochs_kms.c b/drivers/gpu/drm/bochs/bochs_kms.c
index f663c54185..fc856a02a2 100644
--- a/drivers/gpu/drm/bochs/bochs_kms.c
+++ b/drivers/gpu/drm/bochs/bochs_kms.c
@@ -92,34 +92,22 @@ static int bochs_plane_prepare_fb(struct drm_plane *plane,
 				struct drm_plane_state *new_state)
 {
 	struct bochs_bo *bo;
-	int ret;
 
 	if (!new_state->fb)
 		return 0;
 	bo = gem_to_bochs_bo(new_state->fb->obj[0]);
-
-	ret = ttm_bo_reserve(&bo->bo, true, false, NULL);
-	if (ret)
-		return ret;
-	ret = bochs_bo_pin(bo, TTM_PL_FLAG_VRAM);
-	ttm_bo_unreserve(&bo->bo);
-	return ret;
+	return bochs_bo_pin(bo, TTM_PL_FLAG_VRAM);
 }
 
 static void bochs_plane_cleanup_fb(struct drm_plane *plane,
 				   struct drm_plane_state *old_state)
 {
 	struct bochs_bo *bo;
-	int ret;
 
 	if (!old_state->fb)
 		return;
 	bo = gem_to_bochs_bo(old_state->fb->obj[0]);
-	ret = ttm_bo_reserve(&bo->bo, true, false, NULL);
-	if (ret)
-		return;
 	bochs_bo_unpin(bo);
-	ttm_bo_unreserve(&bo->bo);
 }
 
 static const struct drm_plane_helper_funcs bochs_plane_helper_funcs = {
diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c
index 5a0e092847..fcbf35456d 100644
--- a/drivers/gpu/drm/bochs/bochs_mm.c
+++ b/drivers/gpu/drm/bochs/bochs_mm.c
@@ -223,7 +223,11 @@ int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag)
 	bochs_ttm_placement(bo, pl_flag);
 	for (i = 0; i < bo->placement.num_placement; i++)
 		bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
+	ret = ttm_bo_reserve(&bo->bo, true, false, NULL);
+	if (ret)
+		return ret;
 	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
+	ttm_bo_unreserve(&bo->bo);
 	if (ret)
 		return ret;
 
@@ -247,7 +251,11 @@ int bochs_bo_unpin(struct bochs_bo *bo)
 
 	for (i = 0; i < bo->placement.num_placement; i++)
 		bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
+	ret = ttm_bo_reserve(&bo->bo, true, false, NULL);
+	if (ret)
+		return ret;
 	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
+	ttm_bo_unreserve(&bo->bo);
 	if (ret)
 		return ret;
 
-- 
2.9.3