From: Prasad J Pandit <pjp@fedoraproject.org>
Date: Fri, 4 Jan 2019 15:19:10 +0530
Subject: [PATCH] sun4u: add power_mem_read routine

Define skeleton 'power_mem_read' routine. Avoid NULL dereference.

Reported-by: Fakhri Zulkifli <mohdfakhrizulkifli@gmail.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
(cherry picked from commit ad280559c68360c9f1cd7be063857853759e6a73)
---
 hw/sparc64/sun4u.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c
index 74b748497e..e31e357ca9 100644
--- a/hw/sparc64/sun4u.c
+++ b/hw/sparc64/sun4u.c
@@ -213,6 +213,11 @@ typedef struct PowerDevice {
 } PowerDevice;
 
 /* Power */
+static uint64_t power_mem_read(void *opaque, hwaddr addr, unsigned size)
+{
+    return 0;
+}
+
 static void power_mem_write(void *opaque, hwaddr addr,
                             uint64_t val, unsigned size)
 {
@@ -223,6 +228,7 @@ static void power_mem_write(void *opaque, hwaddr addr,
 }
 
 static const MemoryRegionOps power_mem_ops = {
+    .read = power_mem_read,
     .write = power_mem_write,
     .endianness = DEVICE_NATIVE_ENDIAN,
     .valid = {