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drm/ttm: Fix a memory leak

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Free the memory on failure.
Also no need to re-alloc memory on retry.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210219042547.44855-1-xinhui.pan@amd.com
Reviewed-by: Christian König <christian.koenig@amd.com>
CC: stable@vger.kernel.org # 5.11
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
This commit is contained in:
xinhui pan 2021-02-19 12:25:47 +08:00 committed by Maarten Lankhorst
parent 583065c7aa
commit 7a8a4b0729
1 changed files with 6 additions and 3 deletions
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9
drivers/gpu/drm/ttm/ttm_bo.c
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@ -959,8 +959,10 @@ static int ttm_bo_bounce_temp_buffer(struct ttm_buffer_object *bo,
return ret;
/* move to the bounce domain */
ret = ttm_bo_handle_move_mem(bo, &hop_mem, false, ctx, NULL);
if (ret)
if (ret) {
ttm_resource_free(bo, &hop_mem);
return ret;
}
return 0;
}
@ -991,18 +993,19 @@ static int ttm_bo_move_buffer(struct ttm_buffer_object *bo,
* stop and the driver will be called to make
* the second hop.
*/
bounce:
ret = ttm_bo_mem_space(bo, placement, &mem, ctx);
if (ret)
return ret;
bounce:
ret = ttm_bo_handle_move_mem(bo, &mem, false, ctx, &hop);
if (ret == -EMULTIHOP) {
ret = ttm_bo_bounce_temp_buffer(bo, &mem, ctx, &hop);
if (ret)
return ret;
goto out;
/* try and move to final place now. */
goto bounce;
}
out:
if (ret)
ttm_resource_free(bo, &mem);
return ret;