When Linux is shutting down, the pcnet32 driver switches the pcnet card
back to 16bit mode to "avoid problems with dumb DOS packet driver after
a warm reboot".
This triggers the following warning in the qemu pcnet32 emulation:
Bad SWSTYLE=0x04
Avoid this qemu warning by allowing the switch-back to 16bit mode.
Signed-off-by: Helge Deller <del...@gmx.de>
diff --git a/hw/net/pcnet.c b/hw/net/pcnet.c
index d9ba04bdfc..14eb2fa1b0 100644
--- a/hw/net/pcnet.c
+++ b/hw/net/pcnet.c
@@ -1496,8 +1496,9 @@ static void pcnet_bcr_writew(PCNetState *s, uint32_t rap,
uint32_t val)
case 1:
val |= 0x0100;
break;
- case 2:
+ case 2: /* 32bit mode */
case 3:
+ case 4: /* 16bit mode */
val |= 0x0300;
break;
default:
