From: Thomas Zimmermann Date: Fri, 25 Jan 2019 11:02:07 +0000 (+0100) Subject: drm/nouveau: Replace ttm_bo_unref with ttm_bo_put X-Git-Tag: v5.15~6763^2~22^2~14 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=829eee6290b35185f18aa6b52c057b5659b0e557;p=platform%2Fkernel%2Flinux-starfive.git drm/nouveau: 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. Signed-off-by: Thomas Zimmermann Reviewed-by: Christian König Reviewed-by: Huang Rui Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.h b/drivers/gpu/drm/nouveau/nouveau_bo.h index 3920134..846f4bd 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.h +++ b/drivers/gpu/drm/nouveau/nouveau_bo.h @@ -67,11 +67,8 @@ nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo) } else { *pnvbo = NULL; } - if (prev) { - struct ttm_buffer_object *bo = &prev->bo; - - ttm_bo_unref(&bo); - } + if (prev) + ttm_bo_put(&prev->bo); return 0; } diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index b56524d..fb028e3 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -41,7 +41,6 @@ nouveau_gem_object_del(struct drm_gem_object *gem) { struct nouveau_bo *nvbo = nouveau_gem_object(gem); struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev); - struct ttm_buffer_object *bo = &nvbo->bo; struct device *dev = drm->dev->dev; int ret; @@ -56,7 +55,7 @@ nouveau_gem_object_del(struct drm_gem_object *gem) /* reset filp so nouveau_bo_del_ttm() can test for it */ gem->filp = NULL; - ttm_bo_unref(&bo); + ttm_bo_put(&nvbo->bo); pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev);