[PATCH for-5.2 04/19] aspeed/scu: Fix valid access size on AST2400

[Cédric Le Goater]

The read access size of the SCU registers can be 1/2/4 bytes and write
is 4 bytes. Set the min access size to 1 byte to cover both read and
write operations on the AST2400 but keep the min access size of the
other SoCs to 4 bytes as this is an unusual access size.

This fixes support for some old firmware doing 2 bytes reads on the
AST2400 SoC.

Reported-by: erik-smit <erik.lucas.smit@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 hw/misc/aspeed_scu.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/hw/misc/aspeed_scu.c b/hw/misc/aspeed_scu.c
index ec4fef900e27..764222404bef 100644
--- a/hw/misc/aspeed_scu.c
+++ b/hw/misc/aspeed_scu.c
@@ -328,9 +328,10 @@ static const MemoryRegionOps aspeed_ast2400_scu_ops = {
     .read = aspeed_scu_read,
     .write = aspeed_ast2400_scu_write,
     .endianness = DEVICE_LITTLE_ENDIAN,
-    .valid.min_access_size = 4,
-    .valid.max_access_size = 4,
-    .valid.unaligned = false,
+    .valid = {
+        .min_access_size = 1,
+        .max_access_size = 4,
+    },
 };
 
 static const MemoryRegionOps aspeed_ast2500_scu_ops = {
-- 
2.25.4