From 0e7a3d4b66e18c7a56124594b124d0337059c4f2 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Tue, 31 Jul 2018 08:21:27 +0200 Subject: [PATCH] drm/virtio: Replace ttm_bo_unref with ttm_bo_put The function ttm_bo_put releases a reference to a TTM buffer object. The function's name is more aligned to the Linux kernel convention of naming ref-counting function _get and _put. A call to ttm_bo_unref takes the address of the TTM BO object's pointer and clears the pointer's value to NULL. This is not necessary in most cases and sometimes even worked around by the calling code. A call to ttm_bo_put only releases the reference without clearing the pointer. The current behaviour of cleaning the pointer is kept in the calling code, but should be removed if not required in a later patch. Signed-off-by: Thomas Zimmermann Link: http://patchwork.freedesktop.org/patch/msgid/20180731062127.10131-3-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/virtio/virtgpu_drv.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h index 59182975ce16..61767f9589f4 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.h +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h @@ -383,9 +383,8 @@ static inline void virtio_gpu_object_unref(struct virtio_gpu_object **bo) if ((*bo) == NULL) return; tbo = &((*bo)->tbo); - ttm_bo_unref(&tbo); - if (tbo == NULL) - *bo = NULL; + ttm_bo_put(tbo); + *bo = NULL; } static inline u64 virtio_gpu_object_mmap_offset(struct virtio_gpu_object *bo) -- 2.11.0