diff options
| -rw-r--r-- | hw/net/stellaris_enet.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/hw/net/stellaris_enet.c b/hw/net/stellaris_enet.c index d04e6a46f8..bd844cdc38 100644 --- a/hw/net/stellaris_enet.c +++ b/hw/net/stellaris_enet.c @@ -253,10 +253,12 @@ static void stellaris_enet_write(void *opaque, hwaddr offset, s->tx_fifo[s->tx_fifo_len++] = value >> 24; } } else { - s->tx_fifo[s->tx_fifo_len++] = value; - s->tx_fifo[s->tx_fifo_len++] = value >> 8; - s->tx_fifo[s->tx_fifo_len++] = value >> 16; - s->tx_fifo[s->tx_fifo_len++] = value >> 24; + if (s->tx_fifo_len + 4 <= ARRAY_SIZE(s->tx_fifo)) { + s->tx_fifo[s->tx_fifo_len++] = value; + s->tx_fifo[s->tx_fifo_len++] = value >> 8; + s->tx_fifo[s->tx_fifo_len++] = value >> 16; + s->tx_fifo[s->tx_fifo_len++] = value >> 24; + } if (s->tx_fifo_len >= s->tx_frame_len) { /* We don't implement explicit CRC, so just chop it off. */ if ((s->tctl & SE_TCTL_CRC) == 0) |