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drm/vc4: Release fence after signalling 

We were never releasing the initial fence reference that is obtained
through dma_fence_init.

Link: https://github.com/anholt/linux/issues/122
Fixes: cdec4d3613 ("drm/vc4: Expose dma-buf fences for V3D rendering.")
Signed-off-by: Stefan Schake <stschake@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/1512236444-301-1-git-send-email-stschake@gmail.com
This commit is contained in:
Stefan Schake 2017-12-02 18:40:39 +01:00 committed by Eric Anholt
parent 90eeb3aa34
commit babc811005
2 changed files with 4 additions and 1 deletions
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4
drivers/gpu/drm/vc4/vc4_gem.c
View File

@ -888,8 +888,10 @@ vc4_complete_exec(struct drm_device *dev, struct vc4_exec_info *exec)
/* If we got force-completed because of GPU reset rather than
* through our IRQ handler, signal the fence now.
*/
if (exec->fence)
if (exec->fence) {
dma_fence_signal(exec->fence);
dma_fence_put(exec->fence);
}
if (exec->bo) {
for (i = 0; i < exec->bo_count; i++) {

1
drivers/gpu/drm/vc4/vc4_irq.c
View File

@ -139,6 +139,7 @@ vc4_irq_finish_render_job(struct drm_device *dev)
list_move_tail(&exec->head, &vc4->job_done_list);
if (exec->fence) {
dma_fence_signal_locked(exec->fence);
dma_fence_put(exec->fence);
exec->fence = NULL;
}
vc4_submit_next_render_job(dev);