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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/soc/rockchip/rockchip_thunderboot_service.c
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@@ -24,6 +24,7 @@
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 	struct reset_control *rsts;
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 	phys_addr_t mem_start;
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 	size_t mem_size;
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+	bool mem_no_free;
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 };
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 static atomic_t mcu_done = ATOMIC_INIT(0);
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@@ -89,7 +90,8 @@
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 		start = phys_to_virt(serv->mem_start);
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 		end = start + serv->mem_size;
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-		free_reserved_area(start, end, -1, "rtos");
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+		if (!serv->mem_no_free)
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+			free_reserved_area(start, end, -1, "rtos");
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 		spin_lock(&lock);
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 		if (atomic_read(&mcu_done)) {
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@@ -150,6 +152,8 @@
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 	if (IS_ERR(serv->rsts) && PTR_ERR(serv->rsts) == -EPROBE_DEFER)
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 		return -EPROBE_DEFER;
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+	serv->mem_no_free = device_property_read_bool(&pdev->dev, "memory-no-free");
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+
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 	platform_set_drvdata(pdev, serv);
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 	mbox_cl = &serv->mbox_cl;