From 8e285abafefc9d9ab03538f692f25fbdf8cd3ea7 Mon Sep 17 00:00:00 2001
From: Sreenad Menon <sreemeno@qti.qualcomm.com>
Date: Sun, 21 Feb 2021 23:21:41 -0800
Subject: [PATCH] ARM: dts: msm: Add dma-coherent property to virtio device
 nodes

swiotlb_addr returned by swiotlb_tbl_map_single() is modified
for the sake of virtio backends.
If not marked as dma-coherent, kernel would crash due to
arch_sync_dma_for_device() call in swiotlb_map() as that address is
not existing.

Change-Id: I6b1e72a84584a946c763c16d61c5c04f02eb56c0
---
 qcom/waipio-vm.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/qcom/waipio-vm.dtsi b/qcom/waipio-vm.dtsi
index 7aef566b..8e30e132 100644
--- a/qcom/waipio-vm.dtsi
+++ b/qcom/waipio-vm.dtsi
@@ -127,6 +127,7 @@
 				peer-default;
 				vqs-num = <0x1>;
 				push-compatible = "virtio,mmio";
+				dma-coherent;
 				dma_base = <0x0 0x0>;
 				memory {
 					qcom,label = <0x10>;
@@ -141,6 +142,7 @@
 				peer-default;
 				vqs-num = <0x1>;
 				push-compatible = "virtio,mmio";
+				dma-coherent;
 				dma_base = <0x0 0x4000>;
 				memory {
 					qcom,label = <0x11>;