From dfcc3acd2510e5adc3dbb67c83a131bf5fb017ec Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Mon, 22 Dec 2014 13:11:37 +0100
Subject: [PATCH 06/15] fw_cfg_mem: max access size and region size are the
 same for data register

Make it clear that the maximum access size to the MMIO data register
determines the full size of the memory region.

Currently the max access size is 1.

This patch doesn't change behavior.

Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1419250305-31062-4-git-send-email-pbonzini@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 86099db3823fec1800225f89544014a98b227ed9)
---
 hw/nvram/fw_cfg.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
index c48bc6e..8deb860 100644
--- a/hw/nvram/fw_cfg.c
+++ b/hw/nvram/fw_cfg.c
@@ -31,7 +31,6 @@
 #include "qemu/config-file.h"
 
 #define FW_CFG_SIZE 2
-#define FW_CFG_DATA_SIZE 1
 #define FW_CFG_NAME "fw_cfg"
 #define FW_CFG_PATH "/machine/" FW_CFG_NAME
 
@@ -694,7 +693,8 @@ static void fw_cfg_mem_realize(DeviceState *dev, Error **errp)
     sysbus_init_mmio(sbd, &s->ctl_iomem);
 
     memory_region_init_io(&s->data_iomem, OBJECT(s), &fw_cfg_data_mem_ops,
-                          FW_CFG(s), "fwcfg.data", FW_CFG_DATA_SIZE);
+                          FW_CFG(s), "fwcfg.data",
+                          fw_cfg_data_mem_ops.valid.max_access_size);
     sysbus_init_mmio(sbd, &s->data_iomem);
 }
 
-- 
2.1.0