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drm/vmwgfx: use rcu in vmw_user_dmabuf_synccpu_grab 

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
This commit is contained in:
Maarten Lankhorst 2014-05-14 15:41:49 +02:00
parent 39e7f6f84b
commit 5fbad9928f
1 changed files with 10 additions and 6 deletions
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16
drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
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@ -568,13 +568,17 @@ static int vmw_user_dmabuf_synccpu_grab(struct vmw_user_dma_buffer *user_bo,
if (flags & drm_vmw_synccpu_allow_cs) {
bool nonblock = !!(flags & drm_vmw_synccpu_dontblock);
long lret;
ret = ttm_bo_reserve(bo, true, nonblock, false, NULL);
if (!ret) {
ret = ttm_bo_wait(bo, false, true, nonblock);
ttm_bo_unreserve(bo);
}
return ret;
if (nonblock)
return reservation_object_test_signaled_rcu(bo->resv, true) ? 0 : -EBUSY;
lret = reservation_object_wait_timeout_rcu(bo->resv, true, true, MAX_SCHEDULE_TIMEOUT);
if (!lret)
return -EBUSY;
else if (lret < 0)
return lret;
return 0;
}
ret = ttm_bo_synccpu_write_grab