35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
From 2a4848046ad64db5cb1c1090565a28a5cb2c518e Mon Sep 17 00:00:00 2001
|
|
From: Prasad J Pandit <pjp@fedoraproject.org>
|
|
Date: Tue, 29 Nov 2016 00:38:39 +0530
|
|
Subject: [PATCH 01/12] net: mcf: check receive buffer size register value
|
|
|
|
ColdFire Fast Ethernet Controller uses a receive buffer size
|
|
register(EMRBR) to hold maximum size of all receive buffers.
|
|
It is set by a user before any operation. If it was set to be
|
|
zero, ColdFire emulator would go into an infinite loop while
|
|
receiving data in mcf_fec_receive. Add check to avoid it.
|
|
|
|
Reported-by: Wjjzhang <wjjzhang@tencent.com>
|
|
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
|
|
Signed-off-by: Jason Wang <jasowang@redhat.com>
|
|
---
|
|
hw/net/mcf_fec.c | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
diff --git a/hw/net/mcf_fec.c b/hw/net/mcf_fec.c
|
|
index d31fea1..3d4b3b3 100644
|
|
--- a/hw/net/mcf_fec.c
|
|
+++ b/hw/net/mcf_fec.c
|
|
@@ -393,7 +393,7 @@ static void mcf_fec_write(void *opaque, hwaddr addr,
|
|
s->tx_descriptor = s->etdsr;
|
|
break;
|
|
case 0x188:
|
|
- s->emrbr = value & 0x7f0;
|
|
+ s->emrbr = value > 0 ? value & 0x7F0 : 0x7F0;
|
|
break;
|
|
default:
|
|
hw_error("mcf_fec_write Bad address 0x%x\n", (int)addr);
|
|
--
|
|
2.1.4
|
|
|