From: Stefan Schake <stschake@gmail.com>
To: linux-rpi-kernel@lists.infradead.org,
Eric Anholt <eric@anholt.net>, David Airlie <airlied@linux.ie>,
dri-devel@lists.freedesktop.org
Cc: Stefan Schake <stschake@gmail.com>
Subject: [PATCH] drm/vc4: Release fence after signalling
Date: Sat, 2 Dec 2017 18:40:39 +0100 [thread overview]
Message-ID: <1512236444-301-1-git-send-email-stschake@gmail.com> (raw)
We were never releasing the initial fence reference that is obtained
through dma_fence_init.
Link: https://github.com/anholt/linux/issues/122
Fixes: cdec4d361323 ("drm/vc4: Expose dma-buf fences for V3D rendering.")
Signed-off-by: Stefan Schake <stschake@gmail.com>
---
drivers/gpu/drm/vc4/vc4_gem.c | 4 +++-
drivers/gpu/drm/vc4/vc4_irq.c | 1 +
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c
index 6c32c89..6385409 100644
--- a/drivers/gpu/drm/vc4/vc4_gem.c
+++ b/drivers/gpu/drm/vc4/vc4_gem.c
@@ -888,8 +888,10 @@ struct vc4_hang_state {
/* 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++) {
diff --git a/drivers/gpu/drm/vc4/vc4_irq.c b/drivers/gpu/drm/vc4/vc4_irq.c
index 61b2e53..26eddbb 100644
--- a/drivers/gpu/drm/vc4/vc4_irq.c
+++ b/drivers/gpu/drm/vc4/vc4_irq.c
@@ -139,6 +139,7 @@
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);
--
1.9.1
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next reply other threads:[~2017-12-02 17:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-02 17:40 Stefan Schake [this message]
2017-12-02 18:12 ` [PATCH] drm/vc4: Release fence after signalling Chris Wilson
2017-12-08 21:07 ` Eric Anholt
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