[PATCH] fw_cfg: Set the max fw_cfg mem read size to 8 bytes

[Xiaojuan Yang]

From: yangxiaojuan <yangxiaojuan@loongson.cn>

fw_cfg_data_read() func supports access widths from
1 to 8 bytes while the ops set the wrong read size.

Most arch use 8 bytes to send ram_size to bios.

Signed-off-by: yangxiaojuan <yangxiaojuan@loongson.cn>
---
 hw/nvram/fw_cfg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
index 9b8dcca4ea..242614152c 100644
--- a/hw/nvram/fw_cfg.c
+++ b/hw/nvram/fw_cfg.c
@@ -540,7 +540,7 @@ static const MemoryRegionOps fw_cfg_data_mem_ops = {
     .endianness = DEVICE_BIG_ENDIAN,
     .valid = {
         .min_access_size = 1,
-        .max_access_size = 1,
+        .max_access_size = 8,
         .accepts = fw_cfg_data_mem_valid,
     },
 };
-- 
2.27.0