add at24 driver

hc

2023-11-06 15ade055295d13f95d49e3d99b09f3bbfb4a43e7

 kernel/drivers/gpu/arm/mali400/mali/linux/mali_internal_sync.c
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@@ -77,7 +77,7 @@
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 	struct mali_internal_sync_fence_waiter *waiter;
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 #endif
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 	struct mali_internal_sync_fence *sync_fence;
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-	int ret;
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+	int ret = 0;
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 	MALI_DEBUG_ASSERT_POINTER(cb);
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 	MALI_IGNORE(fence);
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 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0)
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@@ -92,7 +92,11 @@
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 	if (ret)
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 		wake_up_all(&sync_fence->wq);
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 #else
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-	ret = sync_fence->fence->ops->signaled(sync_fence->fence);
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+	if (!sync_fence)
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+		return;
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+
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+	if ((sync_fence->fence) && (sync_fence->fence->ops) && (sync_fence->fence->ops->signaled))
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+		ret = sync_fence->fence->ops->signaled(sync_fence->fence);
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 	if (0 > ret)
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 		MALI_PRINT_ERROR(("Mali internal sync:Failed to wait fence  0x%x for sync_fence 0x%x.\n", fence, sync_fence));
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@@ -682,7 +686,7 @@
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 	spin_lock_irqsave(fence->lock, flags);
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-	if (WARN_ON_ONCE(!list_empty(&sync_pt->sync_pt_list)))
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+	if (!list_empty(&sync_pt->sync_pt_list))
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 		list_del(&sync_pt->sync_pt_list);
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 	spin_unlock_irqrestore(fence->lock, flags);
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