From b5bcfc82399f2651e8370fe25e07104327ed5ae4 Mon Sep 17 00:00:00 2001
From: dinglimin <dinglimin@cmss.chinamobile.com>
Date: Mon, 26 Aug 2024 18:27:47 +0800
Subject: [PATCH] rtl8139: Fix behaviour for old kernels.

Old linux kernel rtl8139 drivers (ex. debian 2.1) uses outb to set the rx
mode for RxConfig. Unfortunatelly qemu does not support outb for RxConfig.

Signed-off-by: Hans <sungdgdhtryrt@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: dinglimin <dinglimin@cmss.chinamobile.com>
---
 hw/net/rtl8139.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c
index 8af396cf06..7bcc05e2a5 100644
--- a/hw/net/rtl8139.c
+++ b/hw/net/rtl8139.c
@@ -2746,7 +2746,11 @@ static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val)
             }
 
             break;
-
+        case RxConfig:
+            DPRINTF("RxConfig write(b) val=0x%02x\n", val);
+            rtl8139_RxConfig_write(s,
+                (rtl8139_RxConfig_read(s) & 0xFFFFFF00) | val);
+            break;
         default:
             DPRINTF("not implemented write(b) addr=0x%x val=0x%02x\n", addr,
                 val);
-- 
2.41.0.windows.1