[Qemu-devel] [PATCH 5/8] hw: designware: add read memory region callback

[Li Qiang]

From: Li Qiang <liq...@gmail.com>

Signed-off-by: Li Qiang <liq...@gmail.com>
---
 hw/pci-host/designware.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/hw/pci-host/designware.c b/hw/pci-host/designware.c
index 29ea313798..f5641b5c8c 100644
--- a/hw/pci-host/designware.c
+++ b/hw/pci-host/designware.c
@@ -57,6 +57,12 @@ designware_pcie_root_to_host(DesignwarePCIERoot *root)
     return DESIGNWARE_PCIE_HOST(bus->parent);
 }
 
+static uint64_t designware_pcie_root_msi_read(void *opaque, hwaddr addr,
+                                              unsigned size)
+{
+    return 0;
+}
+
 static void designware_pcie_root_msi_write(void *opaque, hwaddr addr,
                                            uint64_t val, unsigned len)
 {
@@ -71,6 +77,7 @@ static void designware_pcie_root_msi_write(void *opaque, 
hwaddr addr,
 }
 
 static const MemoryRegionOps designware_pci_host_msi_ops = {
+    .read = designware_pcie_root_msi_read,
     .write = designware_pcie_root_msi_write,
     .endianness = DEVICE_LITTLE_ENDIAN,
     .valid = {
-- 
2.17.1