From: Cédric Le Goater <clg@kaod.org>

On Macronix chips, two bytes can written to the WRSR. First byte will
configure the status register and the second the configuration
register. It is important to save the configuration value as it
contains the dummy cycle setting when using dual or quad IO mode.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/block/m25p80.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index a5ccffb4aae..b0ed8fa4188 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -698,6 +698,7 @@ static void complete_collecting_data(Flash *s)
         case MAN_MACRONIX:
             s->quad_enable = extract32(s->data[0], 6, 1);
             if (s->len > 1) {
+                s->volatile_cfg = s->data[1];
                 s->four_bytes_address_mode = extract32(s->data[1], 5, 1);
             }
             break;
-- 
2.17.1