From: Thomas Zimmermann <tzimmermann@suse.de>
Date: Mon, 17 Mar 2025 13:06:51 +0000 (+0100)
Subject: drm/vmwgfx: Test for imported buffers with drm_gem_is_imported()
X-Git-Tag: v6.16-rc1~144^2~16^2~103
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5a80b00d0d10b920397b9cbd4102b1c07ba6583a;p=thirdparty%2Fkernel%2Flinux.git

drm/vmwgfx: Test for imported buffers with drm_gem_is_imported()

Instead of testing import_attach for imported GEM buffers, invoke
drm_gem_is_imported() to do the test. The helper tests the dma_buf
itself while import_attach is just an artifact of the import. Prepares
to make import_attach optional.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Zack Rusin <zack.rusin@broadcom.com>
Cc: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
Reviewed-by: Zack Rusin <zack.rusin@broadcom.com>
Link: https://lore.kernel.org/r/20250317131923.238374-14-tzimmermann@suse.de
---

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
index 64bd7d74854e1..fa5841fda659d 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
@@ -429,7 +429,7 @@ static void *map_external(struct vmw_bo *bo, struct iosys_map *map)
 	void *ptr = NULL;
 	int ret;
 
-	if (bo->tbo.base.import_attach) {
+	if (drm_gem_is_imported(&bo->tbo.base)) {
 		ret = dma_buf_vmap(bo->tbo.base.dma_buf, map);
 		if (ret) {
 			drm_dbg_driver(&vmw->drm,
@@ -447,7 +447,7 @@ out:
 
 static void unmap_external(struct vmw_bo *bo, struct iosys_map *map)
 {
-	if (bo->tbo.base.import_attach)
+	if (drm_gem_is_imported(&bo->tbo.base))
 		dma_buf_vunmap(bo->tbo.base.dma_buf, map);
 	else
 		vmw_bo_unmap(bo);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gem.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gem.c
index 026c9b6996041..e417921af584a 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_gem.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gem.c
@@ -84,7 +84,7 @@ static int vmw_gem_vmap(struct drm_gem_object *obj, struct iosys_map *map)
 	struct ttm_buffer_object *bo = drm_gem_ttm_of_gem(obj);
 	int ret;
 
-	if (obj->import_attach) {
+	if (drm_gem_is_imported(obj)) {
 		ret = dma_buf_vmap(obj->import_attach->dmabuf, map);
 		if (!ret) {
 			if (drm_WARN_ON(obj->dev, map->is_iomem)) {
@@ -101,7 +101,7 @@ static int vmw_gem_vmap(struct drm_gem_object *obj, struct iosys_map *map)
 
 static void vmw_gem_vunmap(struct drm_gem_object *obj, struct iosys_map *map)
 {
-	if (obj->import_attach)
+	if (drm_gem_is_imported(obj))
 		dma_buf_vunmap(obj->import_attach->dmabuf, map);
 	else
 		drm_gem_ttm_vunmap(obj, map);
@@ -111,7 +111,7 @@ static int vmw_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
 {
 	int ret;
 
-	if (obj->import_attach) {
+	if (drm_gem_is_imported(obj)) {
 		/*
 		 * Reset both vm_ops and vm_private_data, so we don't end up with
 		 * vm_ops pointing to our implementation if the dma-buf backend