drm/vmwgfx: Replace ttm_bo_unref with ttm_bo_put
authorThomas Zimmermann <tzimmermann@suse.de>
Fri, 25 Jan 2019 11:02:09 +0000 (12:02 +0100)
committerAlex Deucher <alexander.deucher@amd.com>
Mon, 28 Jan 2019 16:43:24 +0000 (11:43 -0500)
commit6034d9d48e62a0bf36ce8926b556da52f4d13455
treecf80703f31f4065574695058cbbddf35e57a98b7
parent2d18cb98d68e84d84dd952839efddcb82fd68d6c
drm/vmwgfx: 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.

In places where is might be necessary, the current behaviour of cleaning the
pointer is kept.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
drivers/gpu/drm/vmwgfx/vmwgfx_mob.c
drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
drivers/gpu/drm/vmwgfx/vmwgfx_validation.c