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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2026-07-24 16:21:27 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2026-07-24 16:21:27 +0200
commit8f9aa2c90530ab92301a82231ae44f3722becd93 (patch)
treefb282e955b0a880b07131a135257fe3ec764e928 /drivers/dma-buf
parent93467b31bec6da512b51544e5e4584f2745e995e (diff)
parent155b42bec9cbb6b8cdc47dd9bd09503a81fbe493 (diff)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/dma-buf')
-rw-r--r--drivers/dma-buf/dma-fence-unwrap.c3
-rw-r--r--drivers/dma-buf/dma-fence.c9
2 files changed, 8 insertions, 4 deletions
diff --git a/drivers/dma-buf/dma-fence-unwrap.c b/drivers/dma-buf/dma-fence-unwrap.c
index 07fe9bf45aea..cc11c036f2b1 100644
--- a/drivers/dma-buf/dma-fence-unwrap.c
+++ b/drivers/dma-buf/dma-fence-unwrap.c
@@ -97,6 +97,9 @@ int dma_fence_dedup_array(struct dma_fence **fences, int num_fences)
{
int i, j;
+ if (!num_fences)
+ return 0;
+
sort(fences, num_fences, sizeof(*fences), fence_cmp, NULL);
/*
diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c
index a2aa82f4eedd..87797bea91cb 100644
--- a/drivers/dma-buf/dma-fence.c
+++ b/drivers/dma-buf/dma-fence.c
@@ -363,6 +363,8 @@ void dma_fence_signal_timestamp_locked(struct dma_fence *fence,
&fence->flags)))
return;
+ trace_dma_fence_signaled(fence);
+
/*
* When neither a release nor a wait operation is specified set the ops
* pointer to NULL to allow the fence structure to become independent
@@ -377,7 +379,6 @@ void dma_fence_signal_timestamp_locked(struct dma_fence *fence,
fence->timestamp = timestamp;
set_bit(DMA_FENCE_FLAG_TIMESTAMP_BIT, &fence->flags);
- trace_dma_fence_signaled(fence);
list_for_each_entry_safe(cur, tmp, &cb_list, node) {
INIT_LIST_HEAD(&cur->node);
@@ -1167,7 +1168,7 @@ const char __rcu *dma_fence_driver_name(struct dma_fence *fence)
/* RCU protection is required for safe access to returned string */
ops = rcu_dereference(fence->ops);
- if (!dma_fence_test_signaled_flag(fence))
+ if (ops)
return (const char __rcu *)ops->get_driver_name(fence);
else
return (const char __rcu *)"detached-driver";
@@ -1200,8 +1201,8 @@ const char __rcu *dma_fence_timeline_name(struct dma_fence *fence)
/* RCU protection is required for safe access to returned string */
ops = rcu_dereference(fence->ops);
- if (!dma_fence_test_signaled_flag(fence))
- return (const char __rcu *)ops->get_driver_name(fence);
+ if (ops)
+ return (const char __rcu *)ops->get_timeline_name(fence);
else
return (const char __rcu *)"signaled-timeline";
}