The patch below does not apply to the 4.14-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 2189463dba3eac10d7264a40ede12fc1a3c06fb1 Mon Sep 17 00:00:00 2001
From: Robert Foss <robert.foss@xxxxxxxxxxxxx>
Date: Mon, 5 Nov 2018 11:13:12 +0100
Subject: [PATCH] drm/msm: Move fence put to where failure occurs
If dma_fence_wait fails to wait for a supplied in-fence in
msm_ioctl_gem_submit, make sure we release that in-fence.
Also remove this dma_fence_put() from the 'out' label.
Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxxxxx>
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Rob Clark <robdclark@xxxxxxxxx>
Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c
index 66673ea9bf6f..6942604ad9a8 100644
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -413,7 +413,6 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
struct msm_file_private *ctx = file->driver_priv;
struct msm_gem_submit *submit;
struct msm_gpu *gpu = priv->gpu;
- struct dma_fence *in_fence = NULL;
struct sync_file *sync_file = NULL;
struct msm_gpu_submitqueue *queue;
struct msm_ringbuffer *ring;
@@ -446,6 +445,8 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
ring = gpu->rb[queue->prio];
if (args->flags & MSM_SUBMIT_FENCE_FD_IN) {
+ struct dma_fence *in_fence;
+
in_fence = sync_file_get_fence(args->fence_fd);
if (!in_fence)
@@ -455,11 +456,13 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
* Wait if the fence is from a foreign context, or if the fence
* array contains any fence from a foreign context.
*/
- if (!dma_fence_match_context(in_fence, ring->fctx->context)) {
+ ret = 0;
+ if (!dma_fence_match_context(in_fence, ring->fctx->context))
ret = dma_fence_wait(in_fence, true);
- if (ret)
- return ret;
- }
+
+ dma_fence_put(in_fence);
+ if (ret)
+ return ret;
}
ret = mutex_lock_interruptible(&dev->struct_mutex);
@@ -585,8 +588,6 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
}
out:
- if (in_fence)
- dma_fence_put(in_fence);
submit_cleanup(submit);
if (ret)
msm_gem_submit_free(submit);
