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drm/ttm: partial revert "cleanup ttm_tt_(unbind|destroy)" v3 

We still need to unbind explicitly during a move.

This partial reverts commit ff20caa0bcbfef9f7686f8d1868a3b990921afd6.

v2: remove unnecessary check and unused variable
v3: fix typo in commit message

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2016-07-21 12:18:19 +02:00 committed by Alex Deucher
parent bbec97aae6
commit 2ff2bf1e5c
3 changed files with 22 additions and 7 deletions
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1
drivers/gpu/drm/ttm/ttm_bo_util.c
View File

@ -53,6 +53,7 @@ int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
int ret;
if (old_mem->mem_type != TTM_PL_SYSTEM) {
ttm_tt_unbind(ttm);
ttm_bo_free_old_node(bo);
ttm_flag_masked(&old_mem->placement, TTM_PL_FLAG_SYSTEM,
TTM_PL_MASK_MEM);

19
drivers/gpu/drm/ttm/ttm_tt.c
View File

@ -166,16 +166,10 @@ EXPORT_SYMBOL(ttm_tt_set_placement_caching);
void ttm_tt_destroy(struct ttm_tt *ttm)
{
int ret;
if (ttm == NULL)
return;
if (ttm->state == tt_bound) {
ret = ttm->func->unbind(ttm);
BUG_ON(ret);
ttm->state = tt_unbound;
}
ttm_tt_unbind(ttm);
if (ttm->state == tt_unbound)
ttm_tt_unpopulate(ttm);
@ -255,6 +249,17 @@ void ttm_dma_tt_fini(struct ttm_dma_tt *ttm_dma)
}
EXPORT_SYMBOL(ttm_dma_tt_fini);
void ttm_tt_unbind(struct ttm_tt *ttm)
{
int ret;
if (ttm->state == tt_bound) {
ret = ttm->func->unbind(ttm);
BUG_ON(ret);
ttm->state = tt_unbound;
}
}
int ttm_tt_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem)
{
int ret = 0;

9
include/drm/ttm/ttm_bo_driver.h
View File

@ -627,6 +627,15 @@ extern int ttm_tt_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem);
*/
extern void ttm_tt_destroy(struct ttm_tt *ttm);
/**
* ttm_ttm_unbind:
*
* @ttm: The struct ttm_tt.
*
* Unbind a struct ttm_tt.
*/
extern void ttm_tt_unbind(struct ttm_tt *ttm);
/**
* ttm_tt_swapin:
*